ENERGY is a central concept
Q: A car uses a power of 100 W within 25 seconds to operate. What is the work done?
A: Write the given values with suitable variables. P=100 Wt=25 s Here, P denotes the power and t…
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: How can Work, energy and Power of the Human Body be applied in health sciences?
A: We know that the energy is a quantity that changes it state, and this energy is further used to do…
Q: Write the equation of conservation energy?
A: conservation of energy
Q: Calculate the mass of a van that drives at 40 m/s and has 500000 J of energy.
A: Given value--- speed = 40 m/s . energy = 500000 J We have to find--- mass ?
Q: State the postulates of kinetic energy theory corrected by van der Waals.
A: It was considered that in real gas, as compared to the container’s volume, the molecules are…
Q: The unit of work is a combination of the units of A force and displacement B force and…
A:
Q: Energy of a Roller Coaster Car 500 450 400 350 When is kinetic energy changing at the fastest rate?…
A: Option C is the right answer Answer - between 2 to 6 sec
Q: The potential energy associated with the spring is referred to as O elastic potential energy…
A:
Q: Energy is
A: Energy is defined as the work done by an object or rather the quantitative property needed by an…
Q: What Power is expended by 100 Newtons of force applied to an object for 5 meters in just 2 seconds?
A: Work done by the 100 N force for moving the object by a distance of 5 m, W=F·dW=100 N5 mW=500 J
Q: How fast a small car of 1573 kg move to have the same kinetic energy as a 69.8-kg sprinter…
A: mass of car = 1573 kg mass of sprinter = 69.8 kg speed of runner = 9.35 m/skinetic energy of…
Q: Give two applications of law of conservation of mechanical energy using
A: Law of conservation of mechanical energy.
Q: A person who weighs 80 pounds walked up two flight of stairs in 5 minutes. Each flight of stairs has…
A: The expression for find work is W=F·d Substitute values in the above equation…
Q: What’s the formula for kinetic energy?
A: kinetic energy
Q: how much power would you have produced if you lifted 200 kg upwards 2 meters in 0.5 seconds?
A: Given Mass m = 200 kg Height h = 2 m Time t = 0.5 s
Q: What is the kinetic energy of a nonmoving 7 kg bowling ball that is in the middle of a bowling…
A: We are given a bowling ball. This ball is in the middle of bowling alley. We are given mass of the…
Q: Which one of the following items is NOT related to mechanical forms of Work? Shaft work…
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Q: Which example demonstrates only potential energy? O a fish swimming in a lake O an ox taking a nap…
A: The energy possessed by an object by virtue of its position is called potential energy. The energy…
Q: Rank the following from smallest to largest (smallest energy is given the smallest ranking number):…
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Q: What is Potential Energy? O Stored energy O Energy of motion O The ability to gather energy O…
A: Potential energy is a characteristics of conservative force
Q: According to the work-energy theorem, the amount of net work done on an object is equal to the…
A: If v is the final velocity, u is the initial velocity, s is the distance travelled and a is…
Q: On a playground slide, a child has potential energy that decreases by 800 J and kinetic energy that…
A: Given :- PE = 800 J KE = 650 J
Q: What type of energy would a stationary book placed on a shelf that is 5m high have
A: Given: The book is placed on a shelf and the height of shelf from the ground is h = 5 m.
Q: is a person climbing a ladder potential or kinetic energy?
A: We know that energy can neither be created nor destroyed. However, energy can always change its form…
Q: Why is kinetic energy a form of energy associated with an object's motion?
A: Energies are in different forms. It can be converted from one form to another. Different types of…
Q: How much power would you have produced if you lifted 100 kilograms upwards 2 meters in .3 seconds?
A: Given,
Q: What is the kinetic energy of a 1900 pound car travelling at 30 meters per second?
A:
Q: The units of work is: 1-j/sec 2-kg.m/sec squere 3- n/m squere 4-n/m
A: The given problem can be solved using dimension analysis, as following :- Work done is given by as…
Q: stone is propelled vertically off the ground. After it is released, which of the following are true?…
A: The total amount of mechanical energy is merely the sum of the potential energy and the kinetic…
Q: Suppose you expend 1000 J of energy running up the stairs for 20 seconds. How much power did you…
A:
Q: What average power is required for a runner with a mass of 80 kg to reach a speed of 9 m/s during a…
A: Solution: Given that m = 80 kg v = 9 m/s t = 2 s
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