A
How much work is done if you push a 5kg box 5m with a force of 3N
15 J
How much Kinetic energy does an object possess if it isn't moving?
None.
How much potential energy does a tennis ball on the ground possess?
None.
If a spring with a spring constant of 2 N/m, is compressed .05m, how much PE does it have?
.0025 J
Transfer of thermal energy when particles of a fluid move from one place to another
convection
How much power is produced by a dozer if it conducts 200 J of work in 2 seconds?
100 watts
How much kinetic energy does a 17kg dog posses if runs 12m/s?
1224 J
How much PE does a 1kg ball have if it is resting 5m off of the ground?
49 J
If a bow has a spring constant of 3N/m, how far back is it drawn in order to obtain 5J of PE?
1.82 m
Type of heat transfer from one object to another by direct contact
Conduction
If you lift a 100 g box 10 meter off the ground, what is it's potential energy
10 J
A ball traveling 10m/s has 45J of KE, what is it's mass?
.9 kg
If a 2kg book posses 50J of PE, how high is it off of the ground?
2.55 m
Compare the specific heat values of water in it's 3 states
liquid > solid> gas
Which metal will lose heat the fastest? gold: .129 J/g°C chromium: .447 J/g°C copper: .385 J/g°C
Gold
How much power do you produce if a 100N force causes a ball to roll 12m/s?
1200 J
A 3000kg truck has 6000 J of KE, what is it's velocity?
2m/s.
Give a real-world example of energy transforming into at least 3 different forms as it moves throughout a system(s).
Several options
If a .5m spring with a spring constant of 7N/m is compressed by .125m, how much potential energy does it have?
.49 J
The temperature of 300.0 g of water changed from 30.0 to 37.0ºC. How much energy was transferred into the water?
8778 J
If an object possesses 50000J of PE and is 1200 m off of the ground, what is the velocity of the object right before it hits the ground?
154 m/s
A .2kg book travels 12m from rest in 18 seconds, how much kinetic energy does it posses?
.04 J
If an object possesses 1000J of PE and has a mass of 25kg, what height is it located at in cm?
408 cm
A 2m long spring with a spring constant of 10N/m is compressed to .5m, what is the PE?
11.25J
What will the temperature change be if 1125 J of energy is used to heat a block of iron weighing 0.5 kg?(specific heat of iron is .450 J/g°C)
5 C