Apackage of mass 5.30 slides a distance 1.41 down a long ramp that is inclined at an
angle12.3 below the horizontal. the coefficient of
kineticfriction between the package and the ramp is = 0.315
.
a ) calculate the work done on the package by friction.
b) calculate the work done on the package by gravity.
c) calculate the work done on the package by the
normalforce.
d) calculate the total work done on the package.
e) if the package has a speed of 2.25 at the top of the ramp, what is its speed after
slidingthe distance 1.41
down the ramp?

What is tan(61)? а. 1.80 b. 0.49 c. 0.61 d. 0.87

Select light for the type of wave, adjust the wavelength so that the light is red, and increase the amplitude of the light to the max. then, select the start button at the source location to begin producing the waves. light is a form of electromagnetic wave, containing oscillating electric and magnetic fields. the wave amplitude detector mentioned above shows how the electric field oscillates in time at the location of the probe. the amplitude of the wave at the location of the probe is equal to the maximum electric field measured. how does the amplitude of the wave depend on the distance from the source?

Aball is thrown from the top of a building with an initial velocity of 21.9 m/s straight upward, at an initial height of 51.6 m above the ground. the ball just misses the edge of the roof on its way down, as shown in the figure. (a) determine the time needed for the ball to reach its maximum height. (b) determine the maximum height. (c) determine the time needed for the ball to return to the height from which it was thrown, and the velocity of the ball at that instant. (d) determine the time needed for the ball to reach the ground. (e) determine the velocity and position of the ball at t = 5.35 s.