Answer:
Explanation:
When a substance is supplied with a certain amount of heat energy, the temperature of the substance increases according to the equation
where
m is the mass of the substance
Q is the amount of energy supplied
C is the specific heat of the substance
is the temperature change
In this problem:
Q = 758 J is the energy supplied
m = 0.750 kg is the mass of the sample
is the specific heat of copper
Re-arranging the equation, we can find the increase in temperature:
Answer:
4.69 s
Explanation:
u = Initial velocity = 30 m/s
= Angle of launch = 
g = Acceleration due to gravity = 
Time taken by the projectile to land is given by
The time the projectile is in the air before it contacts the ground again is 4.69 s.
Answer:
1. Walking
2. Pushing the basketball with hand
3. Ball bouncing off the ground
Explanation:
As per Newton's third law of motion every action has an equal and opposite reaction. Looking at the given scenario following are the pairs of action-reaction forces:
1. Walking: When you walk, you apply action and push the ground and the ground pushes you back with the same force.
2. Pushing the basketball with hand: when you push the ball that is action, the ball also applies force on your hand which is the reaction.
3. Ball bouncing off the ground: When ball hits the ground, it applies force i.e. action and the ground pushes it back with the same force which is the reaction.
Answer:
1. Energy
2. All of the above
3. Store and use
4. Kinetic
5. mass and velocity
6. Potential
7. mass, height, and gravity
8. Chemical Potential
9. Elastic Potential
10. (`⌒*)O-(`⌒´Q)
Explanation:
Answer:because of small amount of oxygen
Explanation:
If you get higher by the atmosphere the air will start to decrease
