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Question1
Sam, who's mass is 70 kg, takes off across level snow in his jet powered skis. The skis have a thrust of 204 N and the coefficient of kinetic friction on snow of 0.1. Unfortunatately, the skis run out of fuel after only 12 s.
(a) what is Sam's top speed?
(b) How far has Sam travelled when he finally coasts to a stop?
Question2
A swimmer can swim in still water at a speed of 9.50 m/s. He intends to swim straight across a river that has a downstream current of 3.75 m/s.
A.)What have to the swimmer's direction been?
B.)What is his velocity relative to the bank?
A rocket is fired at a speed of 82.0 m/s from ground level, at an angle of 31.0 ° above the horizontal. The rocket is fired toward an 6.95-m high wall, which is located 18.0 m away.
In a non-uniform gas, the equation of state is valid locally, as long as the density does not change too rapidly with position. Consider a column of ideal gas under gravity at constant temperature. Find the density as a function of height, by bala..
Three resistors with values 0.90? , 2.9? , and 4.2? are connected in parallel in a circuit with a 6.4V battery. What is the total equivalent resistance
The resonant frequency of a series RCL circuit is 13.8 kHz. The inductance and capacitance of the circuit are each quadrupled. What is the new resonant frequency
A wheelchair athlete is training on a stationary ergometer. Her wheel's angular velocity is 3 rev/s and diameter is 80.0 cm. What is the linear velocity at the wheel's circumference
Puffy cumulus clouds, which are made of water droplets, occur at lower altitudes in the atmosphere. Find the altitude y (measured from sea level) above which wispy cirrus clouds can occur.
The plate on the back of a certain computer scanner says that the unit draws 0.44A of current from a 120V , 60Hz line. Find the root-mean-square current
A monochromatic beam of light is absorbed by a collection of ground-state hydrogen atoms in such a way that three different wave-lengths are observed while the hydrogen relaxes back to the ground state. What is the wavelength of the incident beam.
A certain gasoline engine has an efficency of 30% what would the hot resevoir temp be for a carnot engine having that efficency if it operates with a cold resevoir temp off 200C
During a stage production of Peter Pan, the 53.5 kg actress playing Peter has to fly in vertically (descend). Calculate the tension in the wire supporting the actor
question1a small asteroid of mass 2.6e9 kg is revealed travelling at a speed of 18kms on a direct heading for starbase
A 5 kg block sits on a surface with a maximum static coefficient of friction of 0.60. A 10g bullet is fired into the block. What must be the speed of the bullet to just make the block start moving
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