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a car weighing 9800N is moving with the speed of 40km/h. on the application of brakes its comes to rest after traveling a distance of 50m. calculate the retarding force
Imagine you and a loarge rock are in a rowboat floating at the centre of a small pond. without capsizing the rowboat, you lift the rock and drop it into the water, and then watch as it sinks to the bottom of the pond.
a motorcycle can accelerate at a rate of 5.2 ms2. the rider plans to take the bike on a loop de loop that has a radius
A commuter train blows its horn as it passes a passenger platformat a constant speed of 30.0 m/s. The trainhorn sounds at a frequency of 330 Hz whenthe train is at rest. What wavelength does the observer find in each case?
A ski gondola is connected to the top of a hill by a steel cable of length 680 m and diameter 1.5cm. As gondola comes to the end of its run, it bumps into the terminal and sends a wave pulse along cable. It is observed that it took 14 s for the p..
The temperature in an electric oven is 153 °C. Thetemperature at the outer surface in the kitchen is 35.5 °C. Theoven (surface area = 1.46 m2) is insulated with materialthat has a thickness of 0.0139 m and a thermal conductivity of0.0129 J/(s m C°..
A 2658 N force is applied 2 cm from the axis of rotation and is parallel to the lever arm. A rotating body has an angular acceleration of 21rad/s2. A 185 N force is applied at the axis of rotation. A force is applied 73 cm away from the axis of rotat..
For the infinite square well problem an electron spends 40% of its time in the n=3 state and 60% of its time in the n=5 state. What is the average energy of the electron
Calculate the speed of a galaxy (relative to us) that is near the observable "edge of the universe, say 11.5 billion light-years away
A 27.0-kg child on a 3.00-m-long swing is released from rest when the ropes of the swing make an angle of 35.0° with the vertical, Neglecting friction, find the child's speed at the lowest position
A skier is gliding along at 3.6 m/s on horizontal, frictionless snow. He suddenly starts down a 10 degree incline. His speed at the bottom is 17 m/s .
a 10-turn square coil 0.50 m on a side lies in the xy-plane. a uniform magnetic field with magnitude 1.0 t in the
What is the smallest quantum of energy that can be absorbed by the molecule in a rotational excitation? What is the smallest quantum of energy that can be absorbed in a vibration excitation? In what regions of electromagnetic spectrum do the transiti..
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