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An astronaut on a space walk is floating away from her space ship at a speed of 0.15 m/s. In order to change directions and move towards her ship, the astronaut turns on the jet pack she is wearing, which ejects some gas at a speed of 30 m/s. After turning off the jet pack, the mass of the astronaut and her pack is 120 kg and she is moving towards her ship at a speed of 0.24 m/s. What is the mass of the ejected gas?
An object with a charge of 0.920 µC is placed at the center of a regular tetrahedron with 4 equivalent surfaces. What is the electric flux through one surface of the tetrahedron?
A 1.00 multiplied by 103-kg Toyota collides into the rear end of a 2.2 multiplied by 103 kg Cadillac stopped at a red light. The bumpers lock, the brakes are locked.
A motor run by a 7.6V battery has a 15 turn square coil with sides of length 3.0cm and total resistance 25ohms. What is the maximum torque on the motor
a detector has a sensitivity of 10^6 V/W and a NEP* = 10^-10 W/Hz^1/2. Light of 1E-6 W power is measured with the detector, what is the signal
An oil drop carries one excess electron and weighs 9.6 x10-15 N. What electric field strength is required to suspend the drop so it is motionless.
Evaluate with the strength of the earth's gravity at its surface, how much weaker is gravity at a distance of 10 earth's center.
For a particular RLC series circuit, the capacitive reactance is 4.15 ?, the inductive reactance is 47.1 ?, What is the maximum voltage across the circuit
A mass is attached to a spring. It oscillates at a frequency of 4/? Hz when displaced a distance of 7.00 cm from equilibrium
A satellite moves in a circular orbit around Earth at a speed of 4439 m/s. Determine the period of the satellites orbit
If an object is moving with constant momentum ‹ 8, ?14, ?4 › kg · m/s, What is the net force acting on the object
A steel rod has a length of exactly 0.2cm at 30degree centigrade. what will be its length at 60degree centigarde?
Two cars are each traveling at 27.0 m/s, and they are approaching each other. What frequency of is heard by the driver of the other car
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