A particle of mass m = 10kg moves along a straight line under the action of force F = λ/x4 , where λ is some constant. A measurement shows that the particle passes the point x = 1m with...

A particle of mass m = 10kg moves along a straight line under the action of force F = λ/x4 , where λ is some constant. A measurement shows that the particle passes the point x = 1m with...

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A slingshot with a spring constant of 200 N/m is stretched a distance of 1.5 m and launches a 3-kg watermelon straight up into the air. What is the maximum height that the watermelon reaches?

Starting from rest, a 7-kg bowling ball rolls down a hill that is 2.1 meters high and then collides with a stationary 1.5-kg cardboard box. If the bowling ball continues rolling forward at...

A girl exerts a force of 45 N at an angle of 30˚ above the horizontal along the handle of her wagon as she pulls it 25 m across the sidewalk. How much work does she do?

A force of 3.7 N is exerted on a 105-gram hockey puck over a distance of 2 meters. If it was initially at rest, what is the final speed of the hockey puck?

A pinball machine uses a spring with a spring constant 120 N/m to launch a 50-gram ball before playing the game. If the ball launcher is pulled back a distance of 4.2 cm and then released, how fast...

I don't understand enthalpy? could someone help

A .500 kg mass is oscillating on a spring with k= 330 N/m. The total energy of it's oscillation is 3.24 J. What is the speed of the mass when it is .100 m from the EP?

A .150 kg mass is attached to a spring with k=18.9 N/m. At the equilibrium position, it moves 2.39 m/s. How mych mechanical energy does it have?

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Hey there, I have been given the mass of water and the time and told to work out the energy supplied. MASS OF WATER M(KG) ...

In an attempt for a physics teacher to explain the conservation of energy to a student, the teacher goes down a 6.0 m high sliding board. At the bottom, he only travels 7.0 m/s. If the mass of the...

How much heat energy is required to completely change 25 grams of ice at 0 degree Celsius to water and raise the temperature to body temperature (37 degree Celsius)?

"When you speak to someone, the air molecules travel from your voice box into the person's ear, thus carrying the sound wave to them." Is the above statement correct? Explain...

Glucose can be metabolised through glycolysis, the citric acid cycle and oxidative phosphorylation to produce energy for the body in the form of ATP. Calculate the net number of ATP that can be generated...

So the question is.... How many Joules of energy will be needed to heat 128.0g of water 0.00 degrees Celsius to 283.08 degrees K. I keep getting 5320 J while my friends...

How much weight in pounds would it take to generate 1 Kw of electricity if the weight were suspended off the ground (Potential Energy) with the force of gravity pulling the weight downward turning...

A 0.50-kg sphere at the top of an incline has a potential energy of 8.0 joules relative to the base of the incline. Rolling halfway down the incline will cause the sphere's potential energy to be...