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A spacecraft moving away from Earth emits a 4748 Hz signal. A scientist on Earth measures thesignal to be 4747 Hz. What is the speed of the spacecraft relative to Earth?
m/s
A hunk of aluminum is completely covered with a gold shell to form an ingot of weight 44.0N. What is the weight of the gold in the shell
You place your lunch leftovers in the refrigerator. Suppose the refrigerator needs to remove 1.5060E+4 J of thermal energy from your lunch to cool it to the temperature of the inside of the refrigerator, What is the total work done by the compresso..
A 31.0cm focal length converging lens is 24.0 cm behind adiverging lens. Parallel light strikes the diverging lens. What is the focal length of the diverging lens
How much current would flow if you directly connected a 20Ω resistor to a 0.01 Volt battery? What would this 500 μA meter read if it was inserted into this circuit ( in series)? Would the internal resistance of the 500 μA meter significantly alter..
an 97.6 g lead ball is dropped from rest from a height of 4.57 m. the collision between the ball and the ground is
A 75 kg skydiver can be modeled as a rectangular box withdimensions of 20cm x 40 cm x 180 cm. What is the terminal speed if he falls feet first
An electron moving with a velocity of 2.7 x10^6 m/s in the positive x direction enters a region, What is the magnitude of the electron's acceleration
A child throws a stone from the top of a 15 m cliff with a speed of 20 m/s. If the stone weights 2 N, find its kinetic energy and speed when it lands on the ground
A certain string just breaks when it is under 25 N of tension. A boy uses this spring to whirl a 0.75kg in a horizontal circle of radius 2.0m. At approximately what speed will the string break
what is the difference between the energy stored in a spring that is stretched 0.40 m and the energy stored in the same spring when it is stretched 0.20 m?
A double-slit interference experiment is performed with light from a laser. The separation between the slits is 0.59 mm, What is the wavelength of the laser light
a particle with charge 9.49times10-8 is moving in a region where there is a uniform magnetic field of 0.470 in the
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