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(a) A 2.20 cm high insect is 1.15 m from a 130 mm focal-length lens. What is the image distance and How high is the image.
(b) What if f = -130 mm? What is the image distance and how high is the image?
At the end of an amusement park ride, you want the gondola to stop without the acceleration exceeding 2 g's. what is the maximum allowed braking force
When the wire is removed, the spheres repel each other with an electrostatic force of 0.0394 N. Of the initial charges on the spheres, with a positive net charge, what was (a) the negative charge in coulombs on one of them and (b) the positive cha..
An ambulance with a siren emitting a whine at 1530 Hz overtakes and passes a cyclist pedaling a bike at 2.55 m/s. How fast is the ambulance moving
A physics book slides off a horizontal tabletop with a speed of 2.70m/s . It strikes the floor in 0.350s . Ignore air resistance. Find the height of the tabletop above the floor
Anita and Nick are playing tug-of-war near a mud puddle. They are each holding on to an end of a taut rope that has a knot exactly in the middle. What is the location of the knot relative to the center of the puddle
A stone is thrown vertically upward. On its way up it passes point A with speed v, and point B, 4.84 m higher than A, with speed v. calculate the maximum height reached by the stone
A man pulls a wagon by exerting a 145 N force along the handle at 62.5° above the horizontal. Find the horizontal and vertical components of the force
An I beam is at 25 C and clamped rigidly between two fixed points, 2 meters apart, so that it can neither expand nor contract. The breaking stress of the beam is 200 MPa and the coefficient of linear expansion is 3.8 x 10^-5/oC and Young's Mod = 120 ..
A bicycle rider ( mass of bike and rider is 85kg ) travelling eastat 23ms^-1 changes its velocity to 23ms^-1south in 5 seconds. calculate the acceleration. calculate the change in momentum. calculate the impulse given to the bike and rider
A trapeze artist swings in simple harmonic motion with a period of 4.2s. The acceleration of gravity is 9.81m/s2. Compute the length of the cables supporting the trapeze.
Two cars start from rest at a red stop light. When the light turns green, both cars accelerate forward. The blue car accelerates uniformly at a rate of 3.7 m/s2 for 4.5 seconds. What is the acceleration of the blue car once the brakes are applied
The power required by an ice maker is 225 W and is the rate at which it does work. The ice maker operates like a refrigerator or an air conditioner and has a coefficient of performance of 3.60.
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