Now consider the following nuclear reaction: 239 Pu + He 1 242 Cm + 6 96 94

Q: What is power?  Calculate the power to move a 9 J box in 20 seconds. Calculate the power used for a…

A: 1. When the work is done in unit time, then the quantity is known as power. Power is also defined as…

Q: A 3 kg book has a weight of 29.4 N, and it takes that amount of force to lift it. Compare the amount…

A:

Q: Your mother got mad at you because you fall down her favorite plate at a height of 4 feet with a…

A: Kinetic energy = 1698.9 joule

Q: What is the kinetic energy of a car that is traveling at 18.6 m/s if it has a mass of 1,240 kg?…

A: Given Mass of car m = 1240 kg speed of car v = 18.6 m/s

Q: How much work is done lifting a 20 pound object from the ground to the top of a 50 foot building if…

A: Weight = 20 pounds Weight per foot = 2.5 lb/ft Height = 50 ft Workdone, W = ?

Q: what is the power required to lift  a 3 kg bag of nails 5 m in 10 s?

A: Mass (m) = 3kg Height (h) = 5m Time (t) = 10s

Q: What is the work done lifting a 20kg child from the floor to a height of 2m? (Note that a mass of…

A: Given  Mass(m) = 20 kg  Height (h) = 2 m  Acceleration due to gravity near earth surface (g) = 9.8…

Q: In the Projectile Motion lab a student measures the height of the projectile launcher off the floor…

A:

Q: Suppose you are using a see-saw with your friend. You have a weight of 500 N and your friend has a…

A: Given data: The weight of man is W=500 N. The weight of friend is W'=600 N. The distance of man from…

Q: A force of 9 pounds compresses a 15-inch spring a total of 5 inches. How much work is done in…

A: force = 9 pounds original length = 15 inch final length = 5 inch

Q: A solid sphere, spherical shell, solid cylinder and a cylindrical shell all have the same mass m and…

A: The acceleration of an object is independent of its mass and its shape.

Q: 29. A force of 15 pounds compresses a 30-inch spring 4 inches. How much work is done in compressing…

A: Given The force applied on the spring is F = 15 lb. The total length of the spring is L = 30 in. The…

Q: What is the potential energy of a boulder that has a mass of 60 kg and is sitting on top of a hill…

A: Given- Mass m=60 kg Height h=200 m g=9.8 m/s2

Q: Which of the following is not a unit of power? O J/s O N'm O horsepower Watts

A:

Q: Calculate the work done by a force of 41 Newtons that moves a box through a displacement of 26…

A: Given data:  Force (F) = 41 N Displacement (d) = 26 m Required: Work done (W)

Q: We define power as the amount of done in a given amount of

A: When work is done equal amount of energy is transferred or consumed. Power is defined as the rate of…

Q: How much work is done lifting a 35 pound object from the ground to the top of a 30 foot building if…

A:

Q: if john uses a window fan 200 watts 4 hours a day for 120 per year how muc does it cost him to run…

A: Given: The fan is of 200 W Uses is 4 hours a day Total days 120 days per year To find: How much…

Q: What is the potential energy stored in a box if it has a mass of 224 kg and is stored on a shelf 7 m…

A: Given: Mass (m) = 224 Kg  Gravity (g) = 9.80 m/s2  Height (h) = 7 m

Q: How much work is done lifting a 120-pound chair from the ground to the top of a 40-foot building…

A:

Q: E www R₁ R₂ www ww R3 Part C Derive an expression for the power being dissipated in R3 for (Figure…

A:

Q: Calculate the work done on a laptop with a mass of 2 kg when it is pushed 0.5 m with a force of 5 N.

A: Given: F = 5 Ns = 0.5 m To find: Work done(W)

Q: ww R₁ R₂ www www R3 Part C Derive an expression for the power being dissipated in R3 for (Figure 2).…

A:

Q: demonstrates a direct energy transfer? demonstrates a direct energy transfer? When the traffic…

A:

Q: How much work is done when moving a box 25 m with a net force of 30 N?

A:

Special Relativity

The theory of special relativity discusses how space and time are related to objects traveling along a straight line at a constant speed. Simply stated, as an object reaches the speed of light, its mass becomes infinite and it is unable to move faster than light. This interstellar speed limit has been the topic of much debate in astronomy, and also in science fiction when people consider how to fly over large distances.