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Suppose that a 920 kg car is traveling at +20 m/s. Its brakes can apply 4596 N of force. What is the minimum distance required for the car to stop?
A grating has 776 lines per centimeter. Find out the angles of the first three principal maxima above the central fringe when this grating is illuminated with 603 nm light.
How much current would be through a copper wire of length 10 m and a diameter of 1 mm, which is connected parallel to a battery of 12 V
Two dogs pull horizontally on ropes attached to a post; the angle between the ropes is 65.0o. Dog A exerts a force of 254N, and dog B exerts a force of 296N. Find the angle the resultant force makes with the rope of dog
What is the direction of an electric field that will balance the weight of a 3.7g plastic sphere that has been charged to -3.1nC ? Upward or Downward
a parallel-plate air capacitor is made from two plates 0.25 m2 in area spaced 1.5 cm apart. it is connected to a 38 v
An airplane has an air speed of 125 mph and an apparent heading due south (the nose of the plane is pointed south). Find the ground speed of the airplane and its heading relative to the earth
A flywheel rotates at a rate of 20 rpm. A motor provides a constant angular acceleration so that 30 secondslater it turns at a rate of 70 rpm, what is the angular acceleration of the splotch of paint
A circular coil having 19 turns and a radius of R = 19.2cm carries a current of 3.30A. It is placed in a uniform magnetic field of 62.0mT. What is the magnitude of the torque acting on the coil
Suppose that a person singing in the shower is producing1.34 mW of sound power. Some of the soundis reflected from the floor and ceiling. The intensity of this reflected sound at a distance of 3.01 mfrom the source is 4.40 10-6 W/m2.
Bill is farsighted and has a near point located 132 cm from his eyes. Anne is also farsighted; however her near point is 82.9 cm from her eyes. Both have glasses that correct their vision to a normal near point (25.0 cm from the eyes), and both wear ..
A predatory fish can accelerate from rest to 5 m/s in 0.28 s. What is the acceleration of the fish
A mass on a spring has a angular oscillation frequency of 2.81rad/s. what is the potential energy stored in the mass-spring system when t=1.42s
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