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A speeder passes a parked police car at a constant speed of 21.1 m/s. At that instant, the police car starts from rest with a uniform acceleration of 2.7 m/s^2. How much time passes before the speeder is overtaken by the police car? Answer in units of s.
When a large star becomes a supernova, its core may be compressed so tightly that it becomes a neutron star, with a radius of 20 km (about the size of San Francisco). If a neutron star rotates once every second, (a) what is the speed of a particle..
Earth has a net charge that produces an electric field of approximately 150 N/C downward at its surface. (a) What is the magnitude and sign of the excess charge.
The switch in a series RL circuit in which R = 5.60 ?, L = 2.10 H, and ?V = 24.2 V is closed at t = 0.0 s. What is the maximum current in the circuit? What is the current when t = 0.375 s?
A block of weight 3.9N is launched up a 30 degrees inclined plane 2.10m long by a spring with k = 2.15kN/m and maximum compression 0.10m, Does the block reach the top of the incline
Find the maximum current in a series circuit with a 25.0 mH inductor and an AC generator with an output rms voltage of 78.0 V
an electron emitted by a heated cathode and accelerated through a potential difference of 2.0 kv enters a region with
A star lying 35pc from the Sun has proper motion of 0.2"/yr. calculate the magnitude of its three-dimensional velocity relative to the Sun
In some places, insect "zappers," with their blue lights, are a familiar sight on a summer's night. how many turns are in the secondary coil
An alert physics student stands beside the tracks as a train rolls slowly past. He notes that the frequency of the train whistle is 443 Hz when the train is approaching him.
A 15m uniform ladder weighing 500 N rests against a frictionless wall. The ladder makes 60 angles with the horizontal.
Use the data of this table to find the point between Jupiter and the Sun at which an object can be placed so that the net gravitational force exerted by Jupiter and Sun on this object is zero
Establish angles subtended by the moon and the sun
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