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When four people with a combined mass of 319 kg sit down in acar, they find that the car drops 2.5 cm lower on its springs. Thenthey get out of the car and bounce it up and down. What is the frequency of the car's vibration if its empty mass is 1810kg?
n object is projected from the surface of the earth with a speed of 1.98×104 m/s. What is its speed when it is very far from the earth
A hunk of aluminum is completely covered with a gold shell to form an ingot of weight 44.0N. What is the weight of the gold in the shell
In a 30.0 s interval, 470 hailstonesstrike a glass window of area 0.600 m2 at an angle of45.0° to the window surface. Each hailstone has a mass of 5.00g and a speed of 8.30 m/s. If thecollisions are elastic, find the pressure on the window.
One mole of oxygen molecules occupies a cubic vessel of side length 10 cm at a temperature of 18 C. Calculate the pressure of the gas on the walls
A bicycle is turned upside down while its owner repairs a flat tire. A friend spins the other wheel of radius 0.4 m and observes that drops of water fly off tangentially. Find the angular deceleration of the wheel
Unpolarized light of intensity I0 is incident on three polarizing filters. What light intensity emerges from the third filter
A 500-g mass hangs from a 45.0-cm-long string that is fixed at the top. The mass is pulled slightly aside and allowed to swing back and forth as a pendulum. What is the frequency (in Hz) of the pendulum
Use Pascal's principle. Given that Fout is 61 lb., the areas of the output and input cylinders are Aout 24 in2 and Ain 5 in2, what is the input force
The femur is a bone in the leg whose minimum cross-sectionalarea is about 4.0 *10^-4 m^2. Find the maximum stressthat this bone can withstand
Calculate the verage speed and time lead by the runner using the definition of average speed.
Two identical blocks are stacked one on top of the other. What is the maximum horizontal force that can be applied to the lower block without the upper block slipping
A rectangular coil with 20 windings carries a current of 1.87 mA flowing in the counterclockwise direction. What torque must be applied to the loop to hold it steady
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