Answers
Related Questions
How do I find the change in velocity of a hockey puck?
Mass=0.1697 kg btw
Answers
Answer:The foot exerts a force on the ball during a well-defined
duration t (time extent of the contact)
Explanation:
why do prescribed drugs need to be prescribed by doctors what can happen if you abuse these drugs without a pressure?
Answers
Answer:
unperscriebed drugs can e harmful to your body
Explanation:
The shortstop plays between first and second base.
true or false
Answers
SINGLE TO RIGHT OR CENTER FIELD-On a single to center or right field the first baseman will be the cutoff to home. The shortstop will cover second base.
Visible light is the _______ that our eyes can see.
Answers
Answer:
Spectrum because it could respond to a specific color based upon how you humans typically perceive Lights of the wavelength
Answer:
spectrum
Explanation:
a ball is thrown vertically upwards from the ground. The ball rises and falls back to the ground. Describe the changes in the mechanical energy of the ball as it rises.
Answers
Answer:
as the ball is thrown, the enegry rises up, when it falls, the ball relseases all energy
Explanation:
An electric motor transforms potential energy into mechanical energy.
Please select the best answer from the choices provided
T
F
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Answer:
t
Explanation:
Answer:
False
Explanation:
What is the main difference between speed and velocity?
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Answer:
Speed is the time rate at which an object is moving along a path, while velocity is the rate and direction of an object's movement.
Answer:
Speed is the time rate at which an object is moving along a path, while velocity is the rate and direction of an object's movement.
Explanation:
Which statement about the relationship between air pressure and air density is accurate?
A) Air pressure decreases as air density increases
B) Air pressure increases as air density increases
C) Air pressure increases as air density decreases
D) Air pressure is unrelated to air density
Answers
Answer:
A: Air pressure decreases as air density increases
Explanation:
Pressure is a force exerted on or against an object by being in contact with a substance. Thus, air pressure is due to the bombardment of the air (gas) particles with a surface. Density is defined as the mass per volume of a substance. Thus, air density is defined as the mass of air per unit volume.
If that Explanation does not make any sense let me make it easier.
The air at the top of a mountain is cooler than the air at the bottom. This temperature difference is due to a phenomenon that occurs in Earth’s atmosphere. Air rises and sinks based on differences in temperature and pressure. Here’s a quick experiment that will help explain the role of pressure.Take in a deep breath as if you were ready to blow out birthday candles. Puff your cheeks with air like a chipmunk. Hold it for a few seconds, and then blow the air slowly from your cheeks.Cold air sinks while warm air rises because cold air is denser than warm air. When a lot of cold air sinks, it creates an area of high air pressure where it hits the surface. This high-pressure air flows to an area of low pressure, creating wind. When this air warms, it rises up into the atmosphere.Temperature decreases as altitude increases. That’s why a mountain peak may be covered with snow while the bottom of the mountain is full of green plants and trees. When warm air rises into the atmosphere, it cools. The density of the air increases as it cools, which eventually creates an area of high pressure and starts the cycle again.
If not for this phenomenon of air rising and sinking in the atmosphere, there would be no wind or weather.
I hope that helped!
Why do you need to learn about Volcanoes?
Answers
Answer:
Without volcanoes, most of Earth's water would still be trapped in the crust and mantle . Early volcanic eruptions led to the Earth's second atmosphere, which led to Earth's modern atmosphere . Besides water and air, volcanoes are responsible for land, another necessity for many life forms .
Explanation:
I hope it helpsA wire of resistance R is cut into ten equal parts which are then connected in parallel. The equivalent resistance of the combination is
Answers
Answer:
The equivalent resistance of the combination is R/100
Explanation:
Parallel Connection of Resistances
If resistances R1, R2, R3,...., Rn are connected in parallel, the equivalent resistance is calculated as follows:
[tex]\displaystyle \frac{1}{R_e}=\frac{1}{R_1}+\frac{1}{R_2}+\frac{1}{R_3}+...+\frac{1}{R_n}[/tex]
The electric resistance of a wire is directly proportional to its length. If a wire of resistance R is cut into 10 equal parts, then each part has a resistance of R/10.
It's known the 10 parts or resistance R/10 were connected in parallel, thus the electric resistance is:
[tex]\displaystyle \frac{1}{R_e}=\frac{1}{R/10}+\frac{1}{R/10}+\frac{1}{R/10}+...+\frac{1}{R/10}[/tex]
Note the sum consists of 10 equal terms. Operating on each term:
[tex]\displaystyle \frac{1}{R_e}=\frac{10}{R}+\frac{10}{R}+\frac{10}{R}+...+\frac{10}{R}[/tex]
The sum of 10 identical fractions yields 10 times each fraction:
[tex]\displaystyle \frac{1}{R_e}=10\frac{10}{R}=\frac{100}{R}[/tex]
Solving for Re needs to take the reciprocal of both sides of the equation:
[tex]R_e=R/100[/tex]
The equivalent resistance of the combination is R/100
a catcher "gives" with the ball when he catches a 0.196 kg baseball moving at 31 m/s. if he moves his glove a distance of 5.32 cm, what is the average force acting on his hand?
Answers
Answer:
3540.5N
Explanation:
Step one:
given data
mass m= 0.196kg
speed v= 31m/s
distance r= 5.32cm = 0.0532m
Step two
The expression relating force, mass, velocity and distance is
F= mv^2/r
substitute we have
F=0.196*31^2/0.0532
F=0.196*961/0.0532
F=188.356/0.0532
F=3540.5N
is cereal a soup? explain why or why not
Answers
Answer:
no
Explanation:
because its cold
soup is hot
What type of matter is likely to absorb the most sound waves
Answers
Answer:
Things like cloth and softmaterial, pliable, or porous materials
Explanation:
Answer:
Porous absorbers e.g paper, cardboards
Pls Solve this!!!Im giving 20 points and Brainliest to the one who answers first. HELP ME PLEASE!!!!!!!!
Answers
Answer:
i) 2Mg + O₂ + Δ Heat → 2MgO + Δ Energy
ii) The aqueous solution does not change in the color of the blue litmus paper and the blue litmus paper remains blue in color
The aqueous solution formed using the product (MgO) turns the red litmus paper blue
Explanation:
i) Magnesium easily burns in air or oxygen when heated to form a white powder of magnesium oxide. The burning (reaction) of magnesium in air is an exothermic reaction that involves the release of heat and light
The burning of magnesium wire is given by the following chemical reaction;
2Mg + O₂ + Δ Heat → 2MgO + Δ Energy
ii) When magnesium oxide is mixed with water if forms magnesium hydroxide Mg(OH)₂ as shown in the following chemical reaction;
MgO + H₂O → Mg(OH)₂
Magnesium hydroxide is basic and therefore it will turn red litmus paper blue and it does not change the color of the blue litmus paper.
Which formula is used to calculate the mass of an object if the force and acceleration are known?
Answers
Answer:
m=F/a so the second one
force÷ by acceleration
where should i graph the distance in a distance time graph
Answers
Answer:
Distance in Y axis and Time in axis
Answer:
the distance should be on the Y axis (vertical) and the time should be on the X axis (horizantial)
What are the types of motion that can be observed in a pendulum ? Some one please answer.√
Answers
Answer:
periodic motion
Explanation:
The massive object is affectionately referred to as the pendulum bob. When the bob is displaced from equilibrium and then released, it begins its back and forth vibration about its fixed equilibrium position. The motion is regular and repeating, an example of periodic motion.
help plz will give brainliest and dont answer if u dont know
Answers
Answer:
is highly motivated
Explanation:
Which statement describes a characteristic of a question that can be answered through scientific inquiry? (A.It requires the application of ethical standards.) (B.It can be answered using measurements.) (C.It can be answered using a philosophical argument.) (D.It requires the approval of more than one scientist.)
Answers
Answer:
B. It can be answered using measurements.
Explanation:
Scientific inquiry can be defined as the various ways, techniques and approach used by scientists to study the world and provide a detailed description (information) based on the empirical evidence derived from the investigation.
Measurements can be defined as a technique which typically involves the process of identifying and determining the dimensions, quality and quantity of a physical object.
Hence, the statement which best describes a characteristic of a question that can be answered through scientific inquiry is that, it can be answered using measurements. Using scientific inquiry to answer questions entails using measurements to propose specific and evidential explanations, as well as back up theories associated with the question.
Given the impulse acting on an object and the impact time which equation can be used to calculate the force applied to an object
Answers
Answer is D
Ndmdjdndbdjdkskd
The impulse acting on an object and the impact time, the equation F= I / Δt can be used to calculate the force applied to an object, therefore the correct answer is D.
What is impulse?The product of the average applied force and the time for which it is exerted is known as an impulse.
the mathematical relation for impulse is
Impulse = F * Δt
where F represents the force applied and Δt represents the time for which the force is applied
Thus, the correct equation that can be used to calculate the force applied to an object is F = I /Δt and the correct option is D.
Learn more about impulse, here
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Which statement accurately compares the trends in atomic number and atomic mass in the periodic table?
O The atomic number increases from left to right, while the atomic mass increases from right to left.
O The atomic mass increases from left to right, while the atomic number increases from right to left.
O Both the atomic mass and the atomic number increase from left to right.
O Both the atomic mass and the atomic number increase from right to left.
Answers
Answer:
C.
That is your answer
Glider A of mass 0.355 kg moves along a frictionless air track with a velocity of 0.095 m/s. It collides with glider B of mass 0.710 kg moving in the same direction at a speed of 0.045 m/s. After the collision, glider A continues in the same direction with a velocity of 0.035 m/s. What is the velocity of glider B after the collision?
Answers
Answer:
vB' = 0.075[m/s]
Explanation:
We can solve this problem using the principle of linear momentum conservation, which tells us that momentum is preserved before and after the collision.
Now we have to come up with an equation that involves both bodies, before and after the collision. To the left of the equal sign are taken the bodies before the collision and to the right after the collision.
[tex](m_{A}*v_{A})+(m_{B}*v_{B})=(m_{A}*v_{A'})+(m_{B}*v_{B'})[/tex]
where:
mA = 0.355 [kg]
vA = 0.095 [m/s] before the collision
mB = 0.710 [kg]
vB = 0.045 [m/s] before the collision
vA' = 0.035 [m/s] after the collision
vB' [m/s] after the collison.
The signs in the equation remain positive since before and after the collision, both bodies continue to move in the same direction.
[tex](0.355*0.095)+(0.710*0.045)=(0.355*0.035)+(0.710*v_{B'})\\v_{B'}=0.075[m/s][/tex]
in physics, the use of force to move an object is called
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Answer:
In physics, work means the use of force to move an object. ... Not all force that is used to move an object does work. For work to be done, the force must be applied in the same direction that the object moves
The use of force to move an object is called Work.
A force can change the motion of an object. A force causes an object with mass to change its velocity (acceleration).
[tex]\bold{Force = Mass\times acceleration}[/tex]
while work is the result of the action when a force causes an object to move in the direction of the force.
[tex]\bold{Work= Force\times Displacement}[/tex]
Therefore, the use of force to move an object is called Work.
To know more visit:
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What is everything in our physical environment made of? *
A matter
B solids
C gases
Answers
Answer: matter
Explanation:
Describe how elements are different from atoms
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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.
An element is a substance in which all of the atoms have the same atomic (proton) number. It is also defined as a substance which cannot be broken down by chemical means.
Is visible light a form of
radiation? Explain.
Answers
Answer:
Yes,in fact visible 'light' is a form of radiation, which can be defined as an energy that travels in the form of electromagnetic waves. It can also be described as a flow of particle-like 'wave-packets', called photons, that travel constantly at the speed of light (about 300 000 kilometres per second).
Explanation:
magnetic field strength decrease when what is increases
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In your own words explain how acceleration differs from uniform motion.
Answers
Explanation:
acceleration is the Changing of throut per unit time ....
and in uniform motion .....
in that the speed of an object is uniform means same
A 1000 kg car’s velocity increases from 5 m/s to 10 m/s. What is the change to the car’s kinetic energy? Show your work.
Answers
Answer:
k. e. = 1/2 mv^2
1/2 * 1000 * (5)^2
1/2 * 1000 * 25
12500 joules
k. e. = 1/2 mv^2
1/2 * 1000 * (10)^2
1/2 * 1000 * 100
50000
change in k. e. = final - initial
50000 - 12500
= 37500 joules
hope it helps you
YALL PLS HELP ME! CAN YOU GUYS CHECK MY ANSWERS?
Answers
Answer:
1. Newton's First Law of Motion
2.Newton's Third Law of Motion
3.Newton's Third Law of Motion
4.Newton's Second Law of Motion
5.Newton's Third Law of Motion
6.Newton's Second Law of Motion
7.Newton's First Law of Motion
Explanation:
Newton's First Law of Motion states that an object remain at rest or moving with a uniform velocity unless an external force acts on it. This is the law of inertia
Newton's Second Law of Motion states that the force of an objects is the product of mass and acceleration.
Newton's Third Law of Motion states that when two objects interact, a pair of forces act on the objects, and they are equal and act in opposite directions.
