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A sensitive gravimeter at a mountain observatory finds that the free-fall acceleration is 0.0078 m/s2 less than that at sea level. Determine what is the observatorys altitude?
A proton is moving parallel to a uniform electric field. The electric field accelerates the proton and increases its linear momentum to 5.0*10-23 kgm/s from 1.5*10-23kgm/s in a time of 6.3*10-6 s. Decide is the magnitude of the electric field?
An electron traveling at 194 m/s enters a1.1 T magnetic field. The angle betweenthe velocity and the field is 30o. Find the radius of the resulting circular path
Suppose that by stirring 854 g of water you are able to increase its temperature from 19 degrees C to 21 degrees C. Find the increase in the water's entropy
Find the magnitude of the magnetic flux through the floor of a house that measures 23m by 18m . Assume that the Earth's magnetic field at the location of the house has a horizontal component of 2.4×10^?5T pointing north, and a downward vertical compo..
Why does a shirt or blouse taken from a clothes dryer sometimes cling to your body?
In an action movie, the villain is rescued from the ocean by grabbing onto the ladder hanging from a helicopter. what was the speed at which the helicopter was ascending
Suppose a star with radius 8.30 108 m has a peak wavelength of 684 nm in the spectrum of its emitted radiation. Find the energy of a photon with this wavelength.
Two rods of equal length L = 1.51 m form asymmetric cross. The horizontal rod has a chargeof Q = 100.0 C, and the vertical rod a charge of-Q = -100.0 C. The charges on both rods are distributed uniformly along their length.
Calculate the efficiency of a reversible engine that operates between the temperatures 620.0° C and 345.0° C
a cessna aircraft has a lift-off speed of 120 kmh.a what minimum constant acceleration does the aircraft require if the
A 3-kg block is suspended by a spring and is at rest on the floor. The spring has a spring constant k equal to 360 kg/s2. what is the unstretched length of the spring
A 10kg block is set moving with an initial speed of 6 m/s on arough horizontal surface. If the force of friction is 20N,approximately how far does the black travel before it stops
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