Answer:
v = 0.713[m/s]
Explanation:
Kinetic energy is defined as the product of mass by the squared velocity of a body. In this way with the following expression we can have the kinetic energy as a function of velocity.
[tex]E_{kin}=0.5*m*v^{2}[/tex]
where:
m = mass = 85 [kg]
v = velocity [m/s]
Ekin = kinetic energy = 2.16*10 [J]
[tex]2.16*10 = 0.5*85*v^{2}\\v =\sqrt{0.508} \\v= 0.713[m/s][/tex]
PLZZZ HELP
In addition to how much force Earth exerts on the object, which features of an object affect its weight?
A.mass and location of the object
B.shape and location of the object
C.location of the object and how much energy the object has
D.mass of the object and how much energy the object has
Answer/Explanation:
The weight of an object is defined as the force that is exerted due to the gravitational force.
Mathematically, it can be written as :
W = m g
Where
m is the mass of the object
g is the acceleration due to gravity
Also,
We know that the value of g varies with respect to the location. At the equator, the value of g is less as compared to the poles.
The feature of an object that affects its weight are :
Mass of the object
Location of the object
How much force Earth exerts on the object
If a police car is travelling towards you what effect does this have on the police
siren?
Answer:
well they make the siren go beacaus eyou are doing somthing wrong so what were you thinking
Explanation:
When a wire with a current is placed in a magnetic field, electrical energy is transformed into mechanical energy
Please select the best answer from the choices provided
T
F
Answer:
TRUE
Explanation:
When a wire with a current is placed in a magnetic field, electrical energy is transformed into mechanical energy. The transformation happens when the magnetic field produced by the current causes the wire to move.
You go outside on a bright, warm day, How can you tell that you are absorbing radiant energy from the sun?
Answer:
you start sweating and it would get hot
The electric field between two parallel plates has a magnitude of 180 N/C. The two plates are 2.5 cm apart. Recall that the magnitude of the charge on an electron is 1.602 × 10-19 C.
How much work is done to move an electron from the positive plate to the negative plate?
4.0 × 10-21 J
7.2 × 10-19 J
4.5 J
7200 J
Answer:
b
Explanation:
The amount of work done to move an electron from the positive plate to the negative plate is : 7.2 * [tex]10^{-19}[/tex] J
Step 1: Given data
magnitude of two parallel plate ( E ) = 180 N/C
Distance between plates ( d ) = 2.5 cm
magnitude of charge on electron ( e ) = [tex]1.602 * 10^{-19}[/tex] C
Step 2 : determine the work done
Work done = qV = еEd
= [tex]1.602 * 10^{-19}[/tex] * 180 * 2.5
= 720 * [tex]10^{-22}[/tex] J ≈ 7.2 * [tex]10^{-19}[/tex] J
Hence the amount of work done to move an electron from the positive plate to the negative plate = 7.2 * [tex]10^{-19}[/tex] J
learn more about electric field : https://brainly.com/question/11509296
I am giving 18 points. Please try and don’t just do it for the points.
They won’t let me shown the very last picture, it looks like the normal L shape that is in every picture, and just one straight line. L—
Like that.
Which of the following graphs below represents the motion of an object at variable speeds? (3 points)
Distance
(miles)
Time
(hours)
Distance
(miles)
Time
(hours)
Answer:Distance.
Explanation:
why water molecules are closer together in the liquid state than in the solid state.
Answer:
because of the hydrogen bonds, as water molecules come together they stick to one another for a small, but significant amount of time. This slows them down, and holds them closer to one another. They become a liquid; a different state of matter where the molecules are closer and slower than in a gas.
Answer:
When water is in its solid-state, the water molecules are packed close together preventing it from changing shape.
Explanation:
In general, when considering the states of matter, solids are denser than liquids, and normally liquids are denser than gases.
Hope this helps!
Brain-List?
why do prescribed drugs need to be prescribed by doctors what can happen if you abuse these drugs without a pressure?
Answer:
unperscriebed drugs can e harmful to your body
Explanation:
Which of the following is an example of kinetic energy?
athlete running in a race
battery charging in a garage
apple hanging from a tree
water boiling on a stove
Answer:
A. Athlete running in a race
Explanation:
Kinetic energy haves something to do with movement
Metamorphic rock occurs when you take any other type of rock and put them under ________ and ______________, and they twist and meld together.
Answer:
This question appear incomplete
Explanation:
This question appear incomplete because of the absence of options. However, metamorphic rocks are rocks that are formed from other pre-existing rocks under heat and pressure (both are usually high), causing them to twist and melt together. Metamorphism simply means a change in form of something and that's what happens here also.
All of the following processes are the ones that lead directly to the formation of sedimentary rock EXCEPT-
deposition of rock fragments.
O
freezing of water in cracks in rock.
o
melting of rock deep underground.
movement of wind that carries earth material.
Answer:
melting of rock deep underground.
Explanation:
The melting of rocks deep underground does not produce sedimentary rocks. Most igneous rocks are produced by this process.
When molten rocks underground called magma is solidified in the subsurface, it results into the formation of igneous bodies.
Sedimentary rocks forms by the accumulation of sediments. Inside the basin where the sediments are deposited, they are compacted, cemented and lithified. Chemical and physical weathering of rocks produces sediments.What is the range of wavelengths that our eyes can see on the spectrum(this is called visible light spectrum)
Answer:
380 to 700 nanometers
Explanation:
The visible light spectrum is the segment of the electromagnetic spectrum that the human eye can view. More simply, this range of wavelengths is called visible light. Typically, the human eye can detect wavelengths from 380 to 700 nanometers.
How can shorter string produce more fundamental frequency in two string of different length?
Answer:
Shorter string produces more frequency in two different strings because the equation for frequency is velocity/wavelength , this means that a shorter string creates a shorter wavelength which essentially increases the total frequency produced
A 3.0 g bullet traveling at a speed of 400 m/s enters a tree and exits the other side with a speed of 200 m/s. Where did the bullet's lost KE go, and what was the energy transferred?
Answer:
1800J
Explanation:
Step one:
given data
mass of bullet m= 3g= 0.03kg
initial velocity u = 400m/s
final velocity v= 200 m/s
Step two:
1.The bullet's lost kinetic energy went inside the tree.
2. The energy transferred is computed as
= initial KE- KE final
Initial KE= 1/2mu^2
Initial KE= 1/2*0.03*400^2
Initial KE= 1/2*0.03*160000
Initial KE= 1/2*4800
Initial KE= 2400J
KE final= 1/2mv^2
KE final= 1/2*0.03*200^2
KE final= 1/2*0.03*40000
KE final= 1/2*1200
KE final= 600J
KE transferred = 2400-600
KE transferred= 1800J
Which of the following formulas is the correct equation for the law of Universal gravitation?
Answer:
F = GMm / r²
from Newton's law of gravitational attraction
How do I find the change in velocity of a hockey puck?
Mass=0.1697 kg btw
Answer:The foot exerts a force on the ball during a well-defined
duration t (time extent of the contact)
Explanation:
define watt and write how much watt is equal to one horse power
Answer:
A watt (W) is a joule (J) of energy used or produced per second. In 2010, the average US power use was 3.3 terawatts, or 3,300,000,000,000 watts. A horsepower is a unit of power. 1 horsepower (hp) is 745.7 watts.
extra info
How many watts does it take to make 1 horsepower?
746 watts !
One electric horsepower is equal to exactly 746 watts.
can someone help me with my qustions :(
Evelyn is making a model of Earth to show how the physical layers correspond to the compositional layers. Which of the following should Evelyn show in her model?
The physical layers exactly match the compositional layers.-A
The crust is the only compositional layer not included in the physical layers. -B
The physical layers of the inner core and outer core form a single compositional layer. -C
The physical layer of the asthenosphere includes the compositional layer of the crust.-D
on a test need it asap.
I'll report u if u don't give the answer and just want the points.
Answer:
B
Explanation:
6. Which phase of matter has a definite volume and shape.
a. solid
b. liquid
c. gas
d.plasma
Answer:
solids
Explanation:
beacause if you take an ice cube does it change its shape no and if it has a definite shape it is sure to have a definite volume
How much gravitational potential energy does a 1.0 kg hammer have on a shelf 1.5 m above the ground?
Answer:
14.7 J
Explanation:
PE=MGH
PE= 1.0 x 9.8 x 1.5 = 14.7 J
What element has conductivity,shiney luster,magnitic
-science
Answer:
The answer to this question is given below in this explanation section.
Explanation:
"What element has conductivity,shiney luster,magnetic
-science"
silicon has a shiny luster,But it is brittle and conducts electricity poorly.Some metalloids change their characteristics when they react with different elements.Luster conductivity and malleability are physical properties can be observed be observed without attempting to change the identity of the substance.The term physical property is an observable characteristics of a substance. in this case the luster conductivity and malleability of metals are the properties, which can be observed by our senses.It differs from chemical properties which can only be observed when the substance change its chemical identity.
Metal are solid at room temperature with the exception of mercury which is liquid at room temperature.Luster metal have the quality of reflection light from its surface and can be polished e.g gold,silver and copper.
How can magnets cause objects to have kinetic energy?
Answer:
this has to do with the drop in voltage, or potential as electrons traverse the material .
Dexter Eius is running through the cafeteria when he slips on some mashed potatoes and falls to the floor. (Let that be a lesson for Dexter.) Dexter lands in a puddle of milk and skids to a stop with an acceleration of -4.8 m/s/s. Dexter weighs 780 Newtons. Determine the coefficient of friction between Dexter and the milky floor.
Answer:
μ = 0.49
Explanation:
For this exercise we can use Newton's second law
Y Axis
N - W = 0
N = W = mg
X axis
-fr = ma
the equation for the friction force is
fr = μ N
we substitute
-μ m g = ma
μ = -a / g
we calculate
μ = 4.8 / 9.8
μ = 0.49
What is the Sl unit for momentum?
O kg• m
O kg
O kg• m
O kg
2
m
Explanation:
The S. I. unit of momentum is Kg. m/sechope it helps you
Question 1 of 11
What are two ways space exploration can improve international relations?
DA By urging countries to compete to achieve goals
DB. By helping countries' economies grow weaker
DC. By encouraging countries to share scientific data
DD. By inspiring countries to work together to solve problems
AnswerC and D
Explanation:
Answer: C & D
Explanation: Aplex
Who would like to be my girlfiend ?
nobody this is a app to help others
Answer:
I bet my great grandmother would
What are natives from Cambodia called
Answer:
Khmer people make up 90% of the Cambodian population, followed by Vietnamese (5%), with the balance being Chinese, Cham (mostly a muslim people) and indigenous ethnic groups sometimes called Khmer Loeu
Explanation:
Answer:
Khmer
Explanation:
Describe how elements are different from atoms
Answer:
An atom is the part of an element. A particular element is composed of only one type of atom. Atoms are further composed of subatomic particles called electrons, protons and neutrons. Elements can combine with each other to form molecules via chemical reaction.
A seismic wave is energy released as the result of rock movement along a fault.
T/F
Answer:
TRUE
Explanation:
In an open circuit ____________.
Question 34 options:
a light bulb would produce light
current will flow
current will not flow
more than one resistor is in the circuit
a resistor controls the flow of current
Answer:
The current will not flow
Explanation:
An open circuit is a circuit that is not complete it has an opening Therfor the current can not flow.
