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A 28.0 kg seal at an amusement park slides down a ramp intothe pool below. The top of the ramp is 1.70 m higher than thesurface of the water and the ramp is inclined at an angle of 30.0degrees above the horizontal. The seal reaches the water with aspeed of 4.90 m/s.
a) What is the work doen by kinetic friction?
b) What is the coefficient of kinetic friction between theseal and the ramp?
Sucrose is allowed to diffuse along a 12.0-cm length of tubing filled with water. What is the difference in the concentration levels of sucrose at the two ends of the tube
A mass m1 = 3.2 kg rests on a frictionless table and connected by a massless string over a massless pulley to another mass m2 = 4.3 kg which hangs freely from the string, How much work is done by gravity on the two block system
An object with mass m = 1.1 g and charge q is placed at point A, which is 0.05 m above an infinitely large, uniformly charged, nonconducting sheet (? = -5.4 10-5 C/m2), as shown in the figure. Gravity is acting downward (g = 9.81 m/s2). Determine the..
A man stands on the roof of a 19.0 -tall building and throws a rock with a velocity of magnitude 30.0 at an angle of 42.0 above the horizontal. Calculate the horizontal distance from the base of the building
A highway is to be built between two towns, one of which lies 44.0 km south and 71.0 km west of the other. at what angle would this highway be directed
A wooden shelter has walls constructed of wooden planks 1.00 cm thick. find the rate of energy loss through a wall that has dimensions 1.65 m by 2.40 m
If the power output of a 630 kHz radio station is 50.0 kW, how many photons per second are produced
An object is to the left of a thin lens. The lens forms an image on a screen that is 2.60 m to the right of the object. Is the image upright or inverted
A small button placed on a horizontal rotating platform with diameter 0.324m will revolve with the platform when it is brought up to a rotational speed of 42.0rev/min , provided the button is a distance no more than 0.142m from the axis. Part A Wh..
Bob (m = 60kg) is wearing a sticky suit. Just as he reaches his desired speed of 6m/s, he reaches the edge of ice (assume the ice is frictionless) and collides with a large crate (m = 250kg). Bob and the crate stick together and slide along level gro..
A 67.5 kg person sits on a 3.77 kg chair. Calculate the pressure exerted on the floor by each leg of the chair, assuming the weight is evenly distributed
The one-dimensional parity operator pi is defined by pi psi (x) = psi (-x) In other words, pi changes x into –x everywhere in the function. Is pi a Hermitian operator?
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