Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
A box starts out at the top of a frictionless ramp, then slides down. The ramp has a height h = 3 meters and a slope of 5 degrees with respect to the ground. The box has a mass of 1 kg. The system is under normal gravity, so g = 9.81 m/s2 Let the potential energy be zero at the bottom.
a) What is the initial gravitational energy of the box at the top of the ramp?
J
b) What is the kinetic energy of the box at the bottom of the ramp?
c) What is the total mechanical energy of the box at the bottom of the ramp?
d) What is the total mechanical energy of the box at the top of the ramp?
e) What does this make the velocity of the box at the bottom?
m/s
f) What is this velocity if the box starts with a mass of 3 kg?
A 768 kg car moving at 27 m/s brakes to a stop. The brakes contain about 16 kg of iron that absorb the energy. What is increase in temperature of the brakes
A certain bivalent metal has a density of 6.458 g/cm3 and a molar mass of 92.8 g/mol. Calculate the number density of conduction electrons
How much energy is given to the cell during this pulse. How many years would it take the earth to move 1.0 mm at this speed.
A 10cm-diameter disk emits light uniformly from its surface. 20rm cm from this disk, along its axis, is an 8.0cm-diameter opaque black disk, What is the diameter of the completely dark part of this shadow
Two 2.0cm x 2.0cm plates that form a parallel-plate capacitor are charged to (+/-) 0.708 nC.what are the electric field strength inside and the potential difference across the capacitor if the spacing between plates.
what is the resolving power of a microscope (lamda = 550 nm) with a 5-mm-diameter objective which has focal point of= 9mm
Two bars of identical mass are at 30 °C. One is made from glass and the other from another substance. The specific heat capacity of glass is 840 J / (kg • C°).
Heather and Jerry are standing on a bridge 45m above a river. Heather throws a rock straight down with a speed of 19m/s. Jerry, at exactly the same instant of time, throws a rock straight up with the same speed. Overlook air resistance. How much t..
A high-speed photograph of a club hitting a golf ball is shown in the figure below. find the average force exerted on the ball by the club
A satellite moves in a circular orbit around Earth at a speed of 5047 m/s. Determine the satellite's altitude above the surface of Earth
A weightlifter lifts 200 kg from the floor to a height of 2 m in 2 s. How much work did the weightlifter perform
A ball is thrown up with a velocity of 8 m/s and allowed to fall back down. how long will the ball take to return to its initial position
Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!
whatsapp: +1-415-670-9521
Phone: +1-415-670-9521
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd