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Two builders carry a sheet of drywall up a ramp. Suppose that W = 2 m, L = 3.10 m, theta = 23 degree, and that the lead builder carries a (vertical) weight of 181 Newton (40.7 lb). Obtain the weight carried by the builder at the rear?
The builder at the rear gets tired and suggests that the drywall should be held by its narrow side. Calculate the weight (in N) he must now carry?
The temperatures indoors and outdoors are 299 and 312 K, respectively. How much heat is removed from the house
Gayle runs at a speed of 8.00 m/s and dives on a sled, initially at rest on the top of a frictionless, snow-covered hill, that has a vertical drop of 23.0 m. What is their speed at the bottom of the hill
A spaceship needs to change its course thus that the magnitude of its momentum p remains the same but the direction changes by the angle α. Obtain the minimum time for which the engines must be turned on
Is the plane of polarization of a polarizing polymer sheet in the similar direction as the molecular chain orientation? Describe . What is meant by optical activity?
A common capacitor found in the lab is in the form of a cylinder of length 2.5 cm. What is the value of the capacitance
A satellite has a mass of 99kg and is located at2.0x106m above the surface of Earth. What is the potential energy associated with the satellite atthis location?
a blue car with mass mc 484 kg is moving east with a speed of vc 18 ms and collides with a purple truck with mass mt
An object and its lens-produced real image are 2.4 meter apart. If the lens has 55-centimeter focal length, find the possible values for the object distance
a charge q1 3.1 times 10-6 c is placed at the origin. charge q2 -6.8 times 10-6 c is placed on the x-axis at x -0.20
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 1.85 m by 2.10 m
A simple model of the Earth includes a dense spherical core of radius 4200 km and a less dense spherical shell of thickness 2180 km, determine the rotational kinetic energy of Earth
Standing waves on a 1.0m long string that is fixed at both ends are seen at successive frequencies of 24 Hz and 63 Hz. What are the wave speed and fundamental frequency?
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