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A camera is supplied with two interchangeable lenses, whose focal lengths are 42.0 and 180.0 mm. A woman whose height is 1.63 m stands 9.20 m in front of the camera. What is the height (including sign) of her image on the image sensor, as produced by
(a) the 42.0-mm lens and
(b) the 180.0-mm lens?
The first active volcano observed outside the Earth was discovered in 1979 on Io, one of the moons of Jupiter. Assume a volcano on another moon is observed to be ejecting material to a height of about 2.19 x10^5 m.
Two point charges q1= 5.00x10^-6C and q2= -3.0x10^-6C are located on x-axis at x1= -0.4m and x2=0.6m, Find the electric field and the electric potential at the origin
A Doppler ultrasound machine uses a probe emitting ultrasound waves at 5MHz to probe the speed of blood cells moving in an artery, What is the wavelength through the soft tissue of ultrasound produced by this machine
A 30 g ball of clay is thrown horizontally at 20 m/s toward a 1.7 kg block sitting at rest on a frictionless hi surface. The clayts and sticks to the block. What is the speed of the block and clay right after the collision?
A 2.00-m tall basketball player is standing on the floor 10.0 m from the basket. If he shoots the ball at a 40 degree angle from the horizontal, what is the acceleration of the ball at its maximum height? The height of the basket is 3.05 m.
A car (mass 930 kg) is traveling with a speed of 48 mi/h. A bug (mass 6 mg) is traveling in the opposite direction. What speed would the bug need
A horizontal force of with a magnitude of F = 220 N is applied to block 1, What is the magnitude of the net force on the middle block
An electron has an initial velocity of 1.00 ? 106 m/s in a uniform 9.00 ? 105 N/C strength electric field. How long does it take the electron to come to rest
A 12mm-high object is 10cm from a convex mirror with focal length 17cm. How far is its image from the mirror
In what direction should the plane head in order to fly.
A metal container, which has a mass of 9.4kg contains 18kg of water. A 1.8 kg piece of the same metal, initially at a temperature of 200°C, is dropped into the water. The container and the water initially have a temperature of 14.1°C and the final..
At one instant, a 19.0-kg sled is moving over a horizontal surface of snow at 5.00 m/s. find the magnitude of the average friction force acting on the sled while it was moving
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