+1-415-670-9189
info@expertsmind.com
How many times must he lift the mass
Course:- Physics
Reference No.:- EM13279253





Expertsmind Rated 4.9 / 5 based on 47215 reviews.
Review Site
Assignment Help >> Physics

A student ate a Thanksgiving dinner that totaled 3000Cal . He wants to use up all that energy by lifting a 30-kg mass a distance of 1.0 m. Assume that he lifts the mass with constant velocity and no work is required in lowering the mass.

A- How many times must he lift the mass?

B- If he can lift and lower the mass once every 4.8s , how long does this exercise take?




Put your comment
 
Minimize


Ask Question & Get Answers from Experts
Browse some more (Physics) Materials
A 150 gram block is projected up a ramp with an initial speed of 6.0 m/s. The coefficient of kinetic friction between the ramp and the block is 0.23. obtain how far along th
A perfectly flat thin piece of glass (N=1.50) that is 6.00 cm long and and 2.0 cm wide is placed over a perfectly flat piece of black plastic (N=1.20) that is the same size. o
You drive on Interstate 10 from San Antonio to Houston, half the time at 51 km/h and the other half at 98 km/h. What is your average speed from Houston back to San Antonio
A 4.9 m diameter merry-go-round is rotating freely with an angular velocity of 0.780 rad/s. Its total moment of inertia is 1550kg*m2. Four people standing on the ground, each
Two cars approaching each other collide and stick together after the collision. One car has a mass of 1820 kg and a speed of 30 km/h in the positive x direction. find the in
A child in a boat throws a 6.0 kg package out horizontally with a speed of 10m/s. Compute the velocity of the boat immediately after, assuming it was initially at rest. The
There are hundreds of letters from soldiers on both sides of this war kept online for people like you and me to view and explore. Go and find one soldier's letters and expl
suppose a star is at a distance of 20 parsec from Earth. What is its apparent magnitude m? If the star has the same luminosity as Sun, what is its absolute magnitude M?