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(1) Two equally charged spheres of mass 0.001Kg are placed 0.02m apart. What is the eletrictric repulsive force that they exert on each other? (The value of k is 9.0*10^9 N.m^2/C^2.)
(2) What is the frequency of light that has a wavelength of 900 * 10^-9m?.
A family ice show is held in an enclosed arena. The skaters perform to music playing at a level of 71.5 dB. What total sound intensity engulfs you
A 4.22 box sits at rest at the bottom of a ramp that is 7.74 long and that is inclined at 40.0 above the horizontal. The coefficient of kinetic friction is 0.40, and the coefficient of static friction is 0.50.
If the microphone in problem 3 has an area of 0.750 cm2. What is the power intercepted by the microphone
Illustrate at what horizontal distance, x, from the base of the building will the rock strike the ground? Assume the ground is level and that the side of the building is vertical. The acceleration of gravity is 9.8 m/s2 .
One mole of an ideal gas at 0?C is held at a constant volume of 98 liter. Find the change in pressure if the tempera- ture increases by 73 ?C
A glass slides across a table top, goes off the edge, and falls onto the floor below. The table is 0.860 m high and the glass lands 1.82 m from th eedge? With what velocity did the glass leave the table top
An ideal gas initially at 20°C and 219 kPa has a volume of 4.70 L. It undergoes a quasi-static,, Find the heat added to the gas during the expansion.
Two slits with a separation of 8.5 x 10^(-5) m create an interference pattern on a screen 2.3 m away. find the wavelength of the light used in the experiment
A grinding wheel of radius 0.280 m rotating on a frictionless axle is brought to rest by applying a constant friction force tangential to its rim. Find the magnitude of the friction force
A bucket of water with a mass of 6.0 kg is attached to a rope that is wound around a cylinder. What is the acceleration of the bucket
A 4.30 kg block is pushed along the ceiling with an constant applied force of F = 71.5 N that acts at an angle ? = 65° with the horizontal, as in the figure below. The block accelerates to the right at 6.36 m/s2.
A physics lab demonstrates the principles of simple harmonic motion (SHM) by using a spring affixed to a horizontal support, calculate the spring constant
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