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A 200 kg rocket sled can be accelerated at a constant rate from rest to 1600 km/h in 2.0 s. What is the magnitude of the required net force?
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The resistor has a value of 10ohms, and the capacitor is 500uF. Calculate the time constant of the circuit. What is the voltage across the capacitor after the switch has been closed for one time constant
Computes the price per kwh for a 12-volt automobile battery with a 50 amp-hour capacity that sells for $40. If its weight is 45-lb, what is the energy density in watt-hours per lb.
An 8-kg ball hanging from the ceiling by a light wire 135cm long is struck in an elastic collision by a 2 kg ball moving horizontally at 5.00 m/s just before the collision. Find the tension in the wire just after collision.
For a standard production car, the highest road-tested acceleration ever reported occurred in 1993, Calculate the magnitude of the car's acceleration
A gas, while expanding under isobaric conditions, does 500 J of work. The pressure of the gas is 1.6 105 Pa, and its initial volume is 1.60 10-3 m3
A bug sits on the rim of a 30 cm-diameter disk. The disk accelerates uniformly from rest to an angular speed of 75.0 rev/min in 4.30 s?, What is the tangential acceleration of the bug
A charge of -3.80 nC and a charge of -6.00 nC are separated by a distance of 60.0 cm. Find out the position at which a third charge of +7.30 nC could be placed so that the net electrostatic force on it is zero.
In exercising, a weight lifter loses 0.124 kg of water through evaporation, find the change in the internal energy of the weight lifter
q1. a simple harmonic oscillator consists of the block of mass 1.90 kg attached to a spring of spring constant 196 nm.
It starts from rest at t = 0, and a line drawn from the center of the disk to a point P on the rim of the disk makes an angle of 57.3° with the positive x-axis at this time. Find out the angular speed of the wheel at t = 2.30 s.
Two rods AB and BC have charges +2Q and -2Q uniformly distributed on them. They are bent in the shape of arcs of a circle and joined at B. Find the linear charge density on rod AB
A beam of light is traveling in air and strikes a material. The angles of incidence and refraction are 51.8° and 43.2°, respectively
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