A 45 kg student runs with a speed of 2.0 m/s off a horizontal ledge that is 5.0 above a swimming pool. Calculate the vertical speed of the student when she hits the water. ... Energy...

A 45 kg student runs with a speed of 2.0 m/s off a horizontal ledge that is 5.0 above a swimming pool. Calculate the vertical speed of the student when she hits the water. ... Energy...

A force of 455 N is exerted in pulling 15 m of rope using a pulley system to lift a 935 N object 5 m. What is the efficiency of the system? ...What is the difference between Work in...

Builders have observed at windows in a home are most attractive if they have the width to length ratio 3 to 5 if a window is to be 48 inches wide what should the length be for the most attractive...

Is it "wrong" to not make myself available 24/7 at work. I put in for my new summer schedule which would've been every day in the morning for availability. Which is more far more time I...

Would the presences of a monopoly tend to ensure the fixed-profit assumption of linear programming or would it make it more likely that the interplay of supply and demand would have to be considered...

A cattle trough has a trapezoidal cross section with a height of 100 cm and horizontal sides of width 100 cm and 50 cm. Assume the length of the trough is 1000 cm. The density of water is...

I am just trying to see how much one ounce will cost me.

block of mass 10 kg is resting on a fixed wedge in a cart moving with 10m/s towards right. Take initial velocity of wedge with respect to cart zero. Find work done by normal force on block in 2 second...

one pan pizza and two beef burritos provide 1980 calories. two pan pizzas and one beef burrito provide 2670 calories. find the calories content of each item

Paige only needs to sell to 17 more customers to receive a bonus. She works part time, so she only talks to 50 customers per day. With a sales ratio of 1:9, on which day will Paige qualify for a bonus...

A 1.00-kg block is pushed along a rough horizontal floor with a horizontal force of 5.00 N for a distance of 5.00 m. If the block is moving at a constant velocity of 4.00 m/s, find... The...

An object of mass m, initially at rest under the action of a constant force F attains a velocity v in time t. Then the average power is supplied to mass is ?

why are there different formulas used for work-energy in dynamics?

if a refrigerator works between the temperature 4c &30c and 600 calories of heat is released then how to calculate work in joules ?

I am a weight lifter and want to calculate how much "work" I do when performing the deadlift. I did the math and want to ensure my concepts and calculations are correct, as it has been a...

A 20.0 kg box slides up a 12.0 m long incline at an angle of 30.0 degrees with the horizontal. A force of 150 N is applied to the box to pull it up the incline. The applied force makes an angle of...

Two positive charges are brought closer together. Describe the work done and the energy conversion that occurs.

There a mass of 4kg and a mass of 5kg connected by an inextensible string passing over a smooth pulley .the mass for 4kg starts from rest and moves up the smooth plane inclined at 30degree to horizontal...

Mei picks forty bushels of apples in 6 hours, her friend helps and it only takes 3.75 hours. Find how long it would take Cody to do it alone.

How much potential energy does 8 million kg of water have as it drops 50 m over Niagara Falls? If a 8 million kg of water flows over Niagara Falls each second, calculate the power available...