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A rectangular air mattress is 1.7 mlong, 0.55 m wide, and 0.05 m thick. If it has a mass of 2.0 kg, what additional mass can it support in water?
kg
A marble is thrown horizontally with a speed of 19.0 m/s from the top of building. When it strikes the ground, marble has a velocity that makes an angle 75° with the horizontal. From what height above the ground was the marble thrown.
Two converging lenses with focal lengths of 40cm and 20cm are 14cm apart. Calculate the image position and image height
A charge q = 5.6 μC is placed at the origin, and asecond charge q = -4.2 μC is placed at x = 1m. find the electric potential midway between the two charges
A landing airplane makes contact with the runway with a speed of 78.0 m/s and moves toward the south. After 18.5 seconds, the airplane comes to rest. What is the average acceleration of the airplane during the landing?
Electromagnetic wave 1 has a maximum electric field of 56V/m , and electromagnetic wave 2 has a maximum magnetic field of 2.0muT, Calculate the average intensity of the first wave
A spotlight sends red light (wavelength = 694.3 nm) to the moon. At the surface of the moon, which is 3.77 multiply.gif 108 m away, Determine the diameter (not the radius) of the central bright spot on the moon
Determine the mass of a 4.6 meter beam, if it is balanced on a fulcrum 2.16 meters from the left end. A 820 N man stands on the very left end, and a 360 N girl stands on the right end. (in kg)
The drive propeller of a ship starts from rest and accelerates at 3.00 x 10-3 rad/s2 for 2.70 x 103 s. Find the total angular displacement of the propeller
A wooden cube of side 0.30 m has density of 700 kg/m^3 and floats partially submerged in seawater(density = 1025 kg/m^3). what is the total mass of the cube
q1. a spring with spring constant 12.5 hangs from the ceiling. a 400 ball is attached to spring and allowed to come to
he density of free electrons in gold is 5.90x10^28 m^-3. The resistivity of gold is 2.44x10^-8 ohms.m at a temperature of 20 C, what is the drift velocity of the electrons in the wire
A solid homogeneous sphere of mass M = 3.20 kg is released from rest at the top of an incline of height H=1.57 m, Determine the rotational kinetic energy of the sphere at the bottom of the incline
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