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Astronauts use a centrifuge to simulate the acceleration of a rocket launch. The centrifuge takes 20.0s to speed up from rest to its top speed of 1 rotation every 1.20s . The astronaut is strapped into a seat 4.60m from the axis.
What is the astronaut's tangential acceleration during the first 20.0s?
How many g's of acceleration does the astronaut experience when the device is rotating at top speed? Each 9.80m/s2 of acceleration is 1 g.
A car drives west on sw 8th street at a speed of 30.7 mph. The driver hits the brakes and the car slows down with a constant acceleration of 4.8 m/s^2
A 0.290-kg block along a horizontal track has a speed of 1.60 m/s, What is the spring's maximum compression if the track is frictionless
An engineer in a locomotive sees a car stuck on the track at a railroad crossing in front of the train. When the engineer first sees the car, the locomotive is 130 m from the crossing and its speed is 17 m/s.
A steel aircraft carrier is 379 m long when moving through the icy North Atlantic at a temperature of 1.8 °C. By how much does the carrier lengthen while it is travelling in the warm Mediterranean Sea at a temperature of 24°C.
If the mass of the electron is 9.109 × 10–31 kg, illustrate what is the magnitude of its relativistic momentum?
With brakes fully applied, a 1430kg car decelerates from a speed of 74km/hr. What is the work done by the braking force in bringing car to a stop.
A professor's office door is 0.94 wide, 2.2 high, 4.0 thick; has the mass of 23, and pivots on frictionless hinges. A "door closer" is attached to door and top of the door frame. When the door is open and at rest, the door closer exerts a torque of 5..
Points A and B have electric potentials of 257 V and 129 V, respectively. When an electron released from rest at point A arrives at point C its kinetic energy is KE1, What is the electric potential at point C
A 11.9-g mass is suspended 1.47 cm above a nonconducting flat plate, directly above an embedded charge of q. If the mass has the same charge, q, how much must q be so that the mass levitates (just floats, neither rising nor falling)? If the charge..
Three charges are situated at corners of a rectangle. How much energy would be expended in moving the 8µC charge to infinity.
What is the charge on each sphere if the two charges are alike?
A particle of charge Q is fixed at the origin of an xy coordinate system. At t = 0 a particle (m = 0.897 g, q = 3.51 µC is located on the x axis at x = 15.4 cm, moving with a speed of 72.2 m/s in the positive y direction. For what value of Q (in ?..
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