uic same height 4. Planet Z-34 has a mass equal to 1/9 that of Earth and a radius equal to 1/3 that of Earth. With g representing, as usual, the acceleration due to gravity on the surface of Earth, the acceleration due to gravity on the surface of Z-34 is A) g B) g/9 g/3 D) 9g E) 3g

Q: Power is the rate at which you do work. You spend more power when you A) do the same work for a…

A: Power is obtained when the work done is divided by the time the work is being done. where

Q: Give example of each class of lever in human body.

A: Step 1A lever is generally a rigid object used to make it easier to move.  There are three classes…

Q: About how many cups of coffee you make with 569,600 J of energy

A: It depends on room temperature, let room temperature is 22 degree celsius. H=mc∆T Where c specific…

Q: How does a wind turbine produce electricity? (A) The spinning blades turn a shaft that connects to a…

A:

Q: The kinetic energy of a 68 -kg athlete running at a velocity of 4.5 m/s is about

A: Given  Mass of athlete = m = 68 kg  Velocity of athlete = v = 4.5 m/s  The kinetic energy is to be…

Q: ed to lift a box 0.5 meters above a floor what amount of work was done to lift the box

A: GivenForce, F=12 NDistance, d=0.5 m

Q: In energy, what is efficiency and power? And how are they related or different.

A: Efficiency is the ratio of the amount of energy that is used usefully compared to the total energy…

Q: The kinetic energy of a 68 -kg athlete running at a velocity of 4.7 m/s is about

A:

Q: Are all kinds of energy equal in their capacity to bring about changes? Why or why not?

A: ENERGY IS REQUIRED TO DO ANY KIND OF WORK. Different kinds of energy are: 1) THERMAL ENERGY 2)…

Q: 1200 J of work was in lifting a box to a height of 3 m. What was mass of the box?

A:

Q: The two ways we can move energy around are called and

A: there are two ways we can move energy around- 1) Electrically- by electrically process energy move…

Q: How much work (in J) is done to accelerate a car which has a mass of 1200 kg from a speed of 13 m/s…

A:

Q: A piano with a mass of 137 kg is lifted 10 m above the ground in 5 s by a crane. What is the power…

A: mass of piano m = 137 kg height lifted h =10 m time t=5s

Q: What is the advantage of a wooden roller coaster over a steel?

A: Advantages of wooden roller coaster over steel

Q: How much work would have to be done to bring a 980-kg automobile traveling at 87 km/h to a stop?

A: Mass of the automobile = 980 kg Speed of the automobile = 87 km/h…

Q: Name six different forms of energy?

A: Six different forms of energy are:

Q: What is sustainable energy?

A:

Q: How much power is required to pull a sled if you use 60J of work in 5 seconds? Answer

A: power is work done per unit time.  if W work has been done in t time the power applied is     P=Wt

Q: What is the kinetic energy of a car that is traveling at 17.3 m/s if it has a mass of 1,345 kg?…

A: Speed of car (v) = 17.3 msMass of car (m) = 1345 kg