How much gravitational potential energy does a 1.0 kg hammer have on a shelf 1.5 m above the ground?

Answers

Answer 1

Answer:

14.7 J

Explanation:

PE=MGH

PE= 1.0 x 9.8 x 1.5 = 14.7 J


Related Questions

A 2.0 kg block is pulled across a horizontal surface by a 15 N force at a constant velocity.a. What is the net force acting on the block?

Answers

Answer:

0

Explanation:

the block is being pulled at a constant velocity meaning it has no acceleration. the rule is fnet=mass x acceleration so if theres no acceleration there is no force net!

A block of mass 2 kg is pulled across a surface with a force of 15 N then the net force acting on the block is 0.

What is Force?

A force is an effect that can alter an object's motion according to physics. A force might cause an object has mass to accelerate when it changes its velocity, for, us when it moves away from rest. An obvious way to describe force is in terms of push or pull. A force is a vector quantity since it has equal magnitude and direction. It is calculated using the newton SI unit (N). Force is denoted by the letter F.

The net force exerted by an object was equal to the speed at which its velocity varies over time, according to Newton's second law in its original formulation.

The block has no acceleration because it is being pushed at a constant speed. If there is no acceleration, there is no force net because the formula is net force =mass × acceleration.

To know more about Force:

https://brainly.com/question/13191643

#SPJ3

Which of the following is a physical state of matter? *
A mass
B volume
C liquid

Answers

The only option out of these that is a state of matter would be C - Liquid

a skydiver has a mass of 50.5 kg what is the force of weight on the sky diver?
F= _N

Answers

Answer:

The answer is 494.9 N

Explanation:

I got this same question, and it worked for me! Hope this helps <3

Sam scored 98, 25, 105, 62 and 65 runs in 5 matches. What was the average score per match?

Answers

Answer:

71

Explanation:

Two objects are shown below. One is neutral and the other is negative. What do you predict would happen?

Answers

Answer:

The body becomes a positive charged body.

Explanation:

Given that two objects are shown below. One is neutral and the other is negative. What do you predict would happen?

According to the law of static electricity, like charges repel each other while unlike charges attract each other.

Since one of the object is neutral and the other one is negative, there will neither attraction nor repulsion between them.

Also, according to Electrostatic induction, the neural body can be charged and becomes positive.

The negative body will attract all the positive charges to its side, and repel all the negative charges to the other side. If the body is touched at the other end, the whole negative charges will be earthed and the body will become a positive body.

According to the law of conservation of energy, mechanical energy can be changed to heat energy.

Answers

Answer:

The answer to this question is given below in this explanation section.

Explanation:

                     " law of conservation of energy"

The law of conservation of energy states that energy can neither be created nor destroyed only converted from one form of energy into another.This mean that a system always has a same account of a energy,unless it is added from the outside.This is particularly confusing in the case of non conversation forces,where energy is converted from ,mechanical energy into thermal energy.but the overall energy does remain the same.The only way to use energy is to transform energy from one form to another.

The amount of energy in any system than it is determined by the following equation.

Ut=Ui +W+Q

Ut is the total internal energy of a system.Ui is the initial internal energy of a system.W is the work done by or on the system.Q is the heat added to or removed by the system.

It is also possible to determined the change in internal energy of the system using the equation.

ΔU=W+Q

The mechanical energy of a system increases provided their is no loss of energy due to friction.The energy would transform to kinetic energy when the speed is increasing.Te mechanical energy of a system remain constant provided their is no loss of energy due to friction.

The law of conversation of energy which say that in a closed system total energy is conserved that is it constant.

KE1 + PE1=KE2+PE2

 

How much water is displaced by a solid object with a volume of 9 cm3 that is completely submerged in the water?

Answers

Given :

An object with a volume of 9 cm³ is completely submerged in the water.

To Find :

How much water is displaced by the object.

Solution :

According to Archimedes' principle, the amount of volume displaced of fluid when an object is fully and partially submerged into that is equal to the volume of the object below the surface of liquid.

Now, it is given that object is fully submerged into water.

Therefore, volume of water displaced by the object is 9 cm³.

A 120 Ω resistor, a 60 Ω resistor, and a 40 Ω resistor are connected in parallel and placed across a potential difference of 12.0 V. What is the equivalent resistance of the parallel circuit?

Answers

Answer:

The equivalent resistance of the parallel circuit would be 20 Ω

Explanation:

To calculate the resistance of resistors connected in parallel, the formula to be used is

1/R = 1/R₁ + R₂ + R₃ + R₄...

1/R = 1/120 + 1/60 + 1/40

1/R = (1 + 2 + 3)/120

1/R = 6/120

1/R = 1/20 Ω

This can be rewritten or cross-multiplied to be

R × 1 = 20 × 1

R = 20 Ω

The equivalent resistance (R) would then be 20 Ω

A boxer pushes on a 25 kg heavy bag which is attached to the ceiling until it makes an angle of 36 degrees to the vertical. How much force must the boxer exert on the bag?

Answers

Answer:

198.20 N

Explanation:

Given that,

Mass of a heavy bag, m = 25 kg

The bag is attached to the ceiling until it makes an angle of 36 degrees to the vertical.

We need to find the force must the boxer exert on the bag. The force acting on the bag is given by :

[tex]F=mg\cos\theta\\\\=25\times 9.8\times \cos(36)\\\\=198.20\ N[/tex]

So, the required force is 198.20 N.

B. Which of these uses the most power? Explain your answer.
1) 160 J of work in 8 seconds
2) 80 J of work is 4 seconds
3) 180 J of work in 9 seconds

Answers

Answer:

p=w/t

160/8=20

80/4=20

180/9=20

...so..all these uses equal power

A force has both______ and _______. Question 3 options: Magnitude & Direction Direction & Motion Speed & Impact Speed and Direction

Answers

Answer:

A force has both Direction and Motion.

Explanation:

For example, when finding acceleration you take the time and divided it by distance. If the thing you are measuring is going in the positive direction, the acceleration will be positive and if it is going in the negative direction the acceleration will be negative.

Answer:

Magnitude and Direction

Explanation:

Force is a Vector Quantity

As learned in an earlier unit, a vector quantity is a quantity that has both magnitude and direction. To fully describe the force acting upon an object, you must describe both the magnitude (size or numerical value) and the direction.

6. What charge is in the nucleus?
a. negative charge
b. positive charge
C. no charge
d. positive and negative charges

Answers

The nucleus is a Negative charge I believe
The nucleus has a positive charge because it contains the protons :)) hope this helped

What is the electric potential at a distance of 1.2 m from a 7.5 UC point charge?
5.6 x 104 v
8.1 x 104 V
5.6 % 1010 V
8.1 x 1010 V

Answers

Answer:

5.6x10^4

Explanation:

use the equation V=kq/d

k is the constant 8.99x10^9

V=(8.99x10^9)q/d

q is the charge, 7.5 micro coulombs, but to get coulombs, multiply by 10^-6

V=(8.99x10^9)(7.5x10^-6)/d

And from the problem, we know that the distance is 1.2 meters

V=(8.99x10^9)(7.5x10^-6)/1.2

This simplifies to 5.6x10^4

The electric potential is 5.6 x 10⁴ v.

To find the electric potential the distance = 1.2 m

Charge q = 7.5 UC

What is electric potential and find the value?

               The amount of work needed to move a unit charge from the known point to some unknown point against the electric field  is said to be electric potential.

Formula of an electric potential is

                                     V = k ( q/r)  volt

                   V - electric potential

                    k - Coulomb constant (8.99x10^9)  

                    q -  charge

                     r- distance of separation

  V = (8.99x10⁹) (q/d)

  q = 7.5 UC ( micro coulomb) 10⁻⁶ C

   V=(8.99x10⁹)(7.5x10⁻⁶)/d

Substituting the values,

    V=(8.99x10⁹)(7.5x10⁻⁶)/1.2

    V = 5.6x10⁴ v

Thus, option A is correct.

Learn more about the electric potential,

https://brainly.com/question/15172925

#SPJ2

Please helpp !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Answers

B. a car on a track, a stop watch, and a ruler

Which of the following statements about infrared telescopes is NOT true?
a. They are typically operated at lower temperatures.
b. They are especially helpful for viewing cool or obscured astronomical objects.
c. They were first built in the 1960s.
d. They are often placed on mountaintops.
e. They do not work well at high altitudes.

Answers

Answer:

a. They are typically operated at lower temperatures.

a. They are typically operated at lower temperatures.b. They are especially helpful for viewing cool or obscured astronomical objects.

Select the correct answer.
Which diagram represents an object in equilibrium?
ОА.
applied
force = 20 N
force due to
friction = 15 N
OB.
applied
force = 20 N
force due to
friction = 20 N
OC.
applied
force = 15 N
force due to
friction = 25 N
OD.
applied
force = 30 N
force due to
friction = 20 N
ОЕ.
applied
force = 30 N
force due to
friction = 15 N
Reset
Next
My

Answers

Answer:

B

Explanation:

The force and friction cancel each other.

20N - 20N = 0N acting on the object.

What type of system is a black hole? Explain how you know.

Answers

Answer:

A black hole is a region of spacetime where gravity is so strong that nothing—no particles or even electromagnetic radiation such as light—can escape from it.[1] The theory of general relativity predicts that a sufficiently compact mass can deform spacetime to form a black hole.[2][3]

The boundary of the region from which no escape is possible is called the event horizon. Although the event horizon has an enormous effect on the fate and circumstances of an object crossing it, according to general relativity it has no locally detectable features.[4] In many ways, a black hole acts like an ideal black body, as it reflects no light.[5][6] Moreover, quantum field theory in curved spacetime predicts that event horizons emit Hawking radiation, with the same spectrum as a black body of a temperature inversely proportional to its mass. This temperature is on the order of billionths of a kelvin for black holes of stellar mass, making it essentially impossible to observe directly.

Objects whose gravitational fields are too strong for light to escape were first considered in the 18th century by John Michell and Pierre-Simon Laplace.[7] The first modern solution of general relativity that would characterize a black hole was found by Karl Schwarzschild in 1916, although its interpretation as a region of space from which nothing can escape was first published by David Finkelstein in 1958. Black holes were long considered a mathematical curiosity; it was not until the 1960s that theoretical work showed they were a generic prediction of general relativity. The discovery of neutron stars by Jocelyn Bell Burnell in 1967 sparked interest in gravitationally collapsed compact objects as a possible astrophysical reality.

Black holes of stellar mass are expected to form when very massive stars collapse at the end of their life cycle. After a black hole has formed, it can continue to grow by absorbing mass from its surroundings. By absorbing other stars and merging with other black holes, supermassive black holes of millions of solar masses (M☉) may form. There is consensus that supermassive black holes exist in the centers of most galaxies.

The presence of a black hole can be inferred through its interaction with other matter and with electromagnetic radiation such as visible light. Matter that falls onto a black hole can form an external accretion disk heated by friction, forming quasars, some of the brightest objects in the universe. Stars passing too close to a supermassive black hole can be shred into streamers that shine very brightly before being "swallowed."[8] If there are other stars orbiting a black hole, their orbits can be used to determine the black hole's mass and location. Such observations can be used to exclude possible alternatives such as neutron stars. In this way, astronomers have identified numerous stellar black hole candidates in binary systems, and established that the radio source known as Sagittarius A*, at the core of the Milky Way galaxy, contains a supermassive black hole of about 4.3 million solar masses.

On 11 February 2016, the LIGO Scientific Collaboration and the Virgo collaboration announced the first direct detection of gravitational waves, which also represented the first observation of a black hole merger.[9] As of December 2018, eleven gravitational wave events have been observed that originated from ten merging black holes (along with one binary neutron star merger).[10][11] On 10 April 2019, the first direct image of a black hole and its vicinity was published, following observations made by the Event Horizon Telescope in 2017 of the supermassive black hole in Messier 87's galactic centre.[12][13][14]

Blackness of space with black marked as center of donut of orange and red gases

The supermassive black hole at the core of supergiant elliptical galaxy Messier 87, with a mass about 7 billion times that of the Sun,[15] as depicted in the first false-colour image in radio waves released by the Event Horizon Telescope (10 April 2019).[16][12][17][18] Visible are the crescent-shaped emission ring and central shadow,[19] which are gravitationally magnified views of the black hole's photon ring and the photon capture zone of its event horizon. The crescent shape arises from the black hole's rotation and relativistic beaming; the shadow is about 2.6 times the diameter of the event horizon.[12]

Schwarzschild black hole

Simulation of gravitational lensing by a black hole, which distorts the image of a galaxy in the background

Gas cloud being ripped apart by black hole at the centre of the Milky Way (observations from 2006, 2010 and 2013 are shown in blue, green and red, respectively).[20]

A tractor trailer truck traveling at a speed of 105 feet/second skids to a stop in 12 seconds. Determine the skidding distance of the truck.
Please help.​

Answers

Answer:

1260ft

Explanation:

Given parameters:

Speed  = 105ft/s

Time  = 12s

Unknown:

Skidding distance of the truck  = ?

Solution:

To solve this problem:

       Distance  = speed x time

Now insert the parameters and solve;

  Distance  = 105 x 12  = 1260ft

A train leaves the station heading south on the tracks. It takes the train 5 seconds to reach 50 miles per hour. It completes the entire 100-mile trip in two hours. Calculate the train's average speed and velocity over the two-hour trip. Show your work. Identify if each of the measurements are a scalar or vector quantity

Answers

divide until you figure out how many miles they went per second. If it takes 5 seconds to reach 50 miles per hour it took 10 seconds per every 10 miles meaning each mile took 1 second. (Not actually possible but the answer) So, If it finished a 100 mile trip in 2 hours it took an hour for 50 miles. If it took 1 hour for 50 miles divide 60/50 which gets you 1.2 so it took 1.2 miles per minute meaning the car went 120 miles per hour I believe. I hope this helps :)

If the sun were to collapse into a black hole, what would the radius be?

Answers

Answer:

If the Sun, with its mass of 1 MSun, were to become a black hole the Schwarzschild radius would be about 3 kilometers; thus, the entire black hole would be about one-third the size of a neutron star of that same mass

Answer:

It would be 1/3rd size of a neutron star

Explanation:

the Schwarzschild radius would be about 3 kilometers; thus, the entire black hole would be about one-third the size of a neutron star of that same mass.

The speed you read on a speedometer is ____.

Answers

Answer:

[tex]\leq 40[/tex]

Explanation:

So if you’re going 40mph, your speedometer may read up to 50.25mph - but it can never read less than 40mph. In order to stay within the law, carmakers calibrate their speedometers to slightly overreport their vehicles' speeds.

help!! what are the blanks???

Answers

The earth receives energy from the sun in one day than all the energy consumed by humans in one year.

Amount of energy received from the sun

The sun provides around 174 petawatts of energy to Earth, of which 89 petawatts is absorbed by the planet.

The Global energy consumption is roughly 15 terawatts annually.

Thus, we can conclude that, the earth receives energy from the sun in one day than all the energy consumed by humans in one year.

Learn more about energy of sun here: https://brainly.com/question/2193109

#SPJ1

please help, brainest if correct

Answers

Answer:  B

Its b increased risk of disease

Which of the following is a layer of the solid Earth? A. convecting mantle B. Ring of Fire C. biosphere D. atmosphere

Answers

Answer:

It's a cause that's the last layer

Answer:

I believe the answer is A

Explanation:

It is not the ring of fire because the ring of fire is the result of tectonic plates moving. It is not the biosphere because biosphere is the regions of the surface.  The convecting mantle is the solid layer of the Earth because the mantle is mostly solid. The atmosphere is a solid plastic layer of the Earth. I hope this helps.

Most metals have...

a. Atoms that are spread out, and low specific heats

b. Atoms that are close, and low specific heats

c. Atoms that are spread out, and high specific heats

d. Atoms that are close, and high specific heats

Answers

I think it’s B I THINK

Transfer of charge by touching is called... induction or conduction?

Answers

Answer:

Transfer of charge by touching is called conduction.

Which lighting source has lower energy costs and a longer life but can be dangerous?
a. fluorescent
b. laser
c. incandescent
d. neon

Answers

Answer: I'm like 98% sure it's fluorescent cause it's got mercury

Explanation:

how would a position-time function look like for linearly increasing negative velocity regions?

Answers

Answer:

Hmmm

Explanation:

Here what I know... If a function gives the position of something as a function of time, the first derivative gives its velocity, and the second derivative gives its acceleration. So, you differentiate position to get velocity, and you differentiate velocity to get acceleration. where t is in seconds and H(t) is in inches.

Does this help?

What is the net force EF?

Answers

Answer:

Physics Net Force

Explanation:

Physics Net Force

The net force is the combined force of all individual forces acting on an object. Newton's First Law can be seen to be the special case in the Second Law when F, the net force, is zero. When that happens, the acceleration a must also be zero.

Hope this helped you!!

State the lows of reflection

Answers

Answer:

The law of reflection states that when a ray of light reflects off a surface, the angle of incidence is equal to the angle of reflection.

Explanation:

Answer: The law of reflection states that when a ray of light reflects off a surface, the angle of incidence is equal to the angle of reflection.

Other Questions
Anyone know the answer? 50 points !!!!!!!!!!!!!! answer the question please help I will give bairnleast Plz help!!its not 82 and 71 combined...... its 8 and then 2/38 2/3 - 7 1/8explanation!!!!!!! What are the 2 largest schools of Buddhism Find the measure of angle b (15 By rounding each of 9.85, 3.875 and 6.3 to the nearest whole number work out an estimate for the answer to 9.85^3 / 3.875 + 6.3^2 Someone please help! No one every answers my questions :( Melanie works at a frozen yogurt stand after school. The stand sells fruit and yogurt smoothies for $3.00 each and soft-serve cones for $2.00 each. On a hot summer day, the stand sold 12 more smoothies than soft-serve cones for total sales of $206. Which of the following systems of equations could be used to find ss, the number of smoothies, and cc, the number of cones the shop sold that day? the integers -10 and 10 are= Finance Bank receives a check drawn on the account of Enterprise Inc., one of thebank's customers, at 3 P.M. Friday. Dora, the presenter of the check, is not one ofthe bank's customers. The bank uses deferred posting with a 2 P.M. cutoff hour. If itdecides to dishonor the check, it must do so by midnighta. SaturdayO b. Sunday.O c MondayOd Tuesday Read the passage from the myth of Romulus and Remus.The founding of Rome revolves around two orphan boys named Romulus and Remus. Legend says that the boys were raised by a mighty wolf. The boys mother was murdered by an evil king named Amulius. The king then threw the two babies into the Tiber River. They washed up onto the banks of the river, where the wolf found them. Seeing the crying babies, she took pity on them. She gently picked them up in her teeth. She took the babies to her cave and fed them. She cared for them for years. The boys grew bigger and stronger. Eventually, a herder found the boys and took them home. He and his wife raised the boys. The boys decided to build a city where the wolf had fed them. However, Romulus and Remus fought over whom the gods favored. In this fight, Romulus killed Remus. Then Romulus founded Rome.What role does the wolf play in the founding of Rome?She builds the city.She kills the founder.She constructs the wall around the city.She rescues the boy who becomes the founder. Help please ill give brainliest Why were Separatist "pilgrims" willing to leave England and travel over a vast ocean to the unsettled wilderness of North America? O They wanted to find open land to farm. hoping that the money they raised from trade would give them more power in England.o They knew they could practice their religious beliefs there without fear of persecution by mainstream Protestants. O They hoped to avoid paying taxes that supported a church with beliefs they didn't share. O They wanted to spread the benefits of a Christian way of life with the native people of North America. help please this has to be done The discount price of a hat is $24 whats the regular price if the discount is 20% help pls Underline or highlight the reflexive verbs in this song.Me despierto a las seis de la maana. Prendo la luz y me levanto de la cama. Voy al bao y me ducho. Me lavo el pelo. Me gusta mucho. Me seco, me afeito lentamente. Me peino. Me cepillo los dientes y me miro en el espejo.Regreso a mi cuarto y me visto. Me pongo la gorra y estoy listo. Voy a lacocina y me siento. Desayuno muy lento.Me siento feliz, hoy no tengo escuela. Ya me voy a la casa de mi abuela.Vamonos ApurateDespus de un da muy largo me siento muy cansado. Me acuesto en la cama y me duermo sin drama find the value of x that makes lines u and line v parallel, help!! The picture shows a sedimentary rock that was formed from crystalized minerals.Which type of sedimentary rock is shown?chemicalclasticorganicsandstone Please help me due tonight! Helppp please Im slow-