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As measured in Earth's frame of reference, two planets are 4.25×10^5 km apart. A spaceship flies from one planet to the other with a constant velocity, and the clocks on the ship show that the trip lasts only 1.02 s.
How fast is the ship traveling?
Answer in v=___m/s
A yo-yo has a rotational inertia of 1140 g·cm2 and a mass of 81.3 g. Its axle radius is 3.27 mm, and its string is 106 cm long, translational kinetic energy, rotational kinetic energy
In a television picture tube, electrons strike the screen after being accelerated from rest through a potential difference of 32000 V. find the electron speed just before the electron strikes the screen
A Carnot engine with a hot-reservoir temperature of 360 has the same thermal efficiency. What is the cold-reservoir temperature in C?
A magnetic field and an electric field, in separate regions of space, have strengths of 1.25 T and 1.25 N/C, respectively. What is the energy density of the magnetic field
The frequency of light emitted by a toaster is 2.5 GHz. How many toaster photons are required to heat the water
A man stands on the roof of a building of height 16.8m and throws a rock with a velocity of magnitude 31.8m/s, Calculate the magnitude of the velocity of the rock just before it strikes the ground
The gauge pressure at the bottom of a reservoir is 7.0 times what it is at a depth of 1.3 m. How deep is the reservoir
Two identical cars (m = 1350 kg) are traveling at the same speed of 28.0 m/s. estimate the magnitude of the total momentum of the two cars
A car traveling at 86 km/h strikes a tree. The front end of the car compresses, What was the average acceleration of the driver during the collision
Water has a mass per mole of 18.0 g/mol, and each water molecule (H2O) has 10 electrons. What is the net charge of all these electrons
A microwave oven is powered by an electron tube called a magnetron, which generates electromagnetic waves of frequency 3.46 GHz. determine the speed of the microwaves
A copper plate, with dimensions of 3 cm x 3 cm x 5cm length, width, and thickness respectively, determine the temperature rise in the plate after 10 seconds
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