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When four people with a combined mass of 300 kg sit down in a 2.0 103-kg car, they find that their weight compresses the springs an additional 0.65 cm.
(a) What is the effective force constant of the springs?
N/m
(b) The four people get out of the car and bounce it up and down. What is the frequency of the car's vibration?
Hz
An Atwood system which has two masses, m1 = 2 kg and m2 = 2.1 kg. What is the net force on this system
The ball is 21.9 m from the goal post. The ball is kicked with an initial velocity of 19.8 m/s at an angle θ above ground. Between what two angles, θ1 and θ2, will the ball clear the 2.74m high crossbar.
The distance between two successive minima of a transverse wave is 2.45 m. Five crests of the wave pass a given point along the direction of travel every 14.5 s. (a) Find the frequency of the wave. Hz (b) Find the wave speed. m/s
After the collision, the 0.177 kg puck has a speed of 1.38 m/s at an angle of 27? to the positive x axis. Examine the velocity of the 0.302 kg puck after the collision.
A stone is thrown outward from the top of a 59.4m high cliff with an upward velocity component of 19.5 m/s. How long is the stone in the air
Light enters a polarizing apparatus at an intensity of 100 units, Determine the angle of rotation theta
A parallel plate capacitor has plates of area 2.0*10^3 and plate separation 1.0*10^4m. find the capacitance of this system if air fills the volume between the plates.
Suppose a crate of mass 8.4 kg is placed on the plank in the figure below at a distance x = 8.3 m from the left end. find the forces exerted by the two supports on the plank
In a women's 100-m race, accelerating uniformly, Laura takes 1.81 s and Healan 3.06 s to attain their maximum speeds, which they each maintain for the rest of the race.
A 3.4M? resistor is connected in series with an initially uncharged 0.29?F capacitor. This arrangement is then connected across four 1.5-Vbatteries, What is the maximum charge on the capacitor
A 1.0--tall vertical tube is filled with 20o water. A tuning fork vibrating at 574 is held just over the top of the tube as the water is slowly drained from the bottom.
The maximum tension that a 0.5m string can tolerate is 14N. A 2.5kg ball is attracted to the string being whirled in a vertical circle. What is the maximum speed the ball can have at the top of the circle.
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