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An astronaut in space cannot use a scale or balance to weigh objects because there is no gravity. But she does have devices to measure distance and time accurately. She knows her own mass is 78.4kg, but she is unsure of the mass of a large gas canister in the airless rocket. When this canister is approaching her at 3.50m/s, she pushes against it, which slows it down to 1.20m/s (but does not reverse it) and gives her a speed of 2.60m/s.
(a) What is the mass of this canister?
A rocket cruising past earth at 0.800c shoots a bullet out the back door, opposite the rocket's motion, at 0.900c relative to the rocket. What is the bullet's speed relative to the earth
A four-turn circular wire coil of radius 0.565 m lies in a plane perpendicular to a uniform magnetic field of magnitude 0.340 T. what is the average induced emf in the wire during this time
An arrow is shot at an angle of θ=45° above the horizontal.
The displacement of a particle moving under uniform acceleration is some function of elapsed time and acceleration. Suppose we write this displacement as: s=ka^mt^n where k is the dimensionless constant.
Oppositely charged parallel plates are separated by 5.30 mm. A potential difference of 600 V exists between the plates. What is the magnitude of the electric field between the plates
When you put water in a kitchen blender, it begins to travel in a 3-cm-radius circle at a speed of 1 m/s. How quickly is the water accelerating
A woman who is late in her pregnancy often leans backwards slightly when getting out of chairs and even while walking. Why is the backpack helpful
A horizontal water main with a cross-sectional area of 196 cm2 necks down to a pipe of area 40.4 cm2. Determine the flow rate through the system, taking the fluid to be ideal
Find the change in internal energy using first law of thermodynamics.
A tile is dropped at a height of 12 Meters. The tile has a mass of 2.5kg. Calculate the final speed of the tile
An elevator with a mass 2000kg rises with an acceleration of 1m/s^2. What is the tension in the supporting cables
A gamma-ray photon produces an electron and a positron, each with a kinetic energy of 259keV, Determine the energy of the photon
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