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A 3.7 kg bucket of water is raised from a well by a rope. Ifthe upward acceleration of the bucket is 4.1 meters per secondsquared, find the force exerted by the rope on the bucket of water.
The focal length of an objective lens is 4.60mm . The image formed by this lens is 145mm from its focal point. find the magnitude of the angular magnification of the microscope
A projectile is fired from the surface of the Earth with a speed 200 meters per second at an angle of 30 degrees above the horizontal. what is the maximum height reached by the projectile
A computer to be used in a satellite must be able to withstand accelerations of up to 23 times the acceleration due to gravity. What is the minimum amplitude of vibration that must be used in this test
Calculate the limiting angle of resolution for the eye, assuming a pupil diameter of 1.80 mm, a wavelength of 530 nm in air, and an index of refraction for the eye of 1.33
An ice-making machine operates in a Carnot cycle. It takes heat from water at 0.0°C and rejects heat to a room at 22.5°C, How much heat is discharged into the room
You are on an unknown planet orbiting an unknown star. When the 108 cm long camera is pointed at the star an image is formed that is 1 cm in diameter, what is the diameter of the star
A 859 kg geosynchronous satellite orbits a planet similar to Earth at a radius 1.94 × 10^5 km from the planet's center. What is the force acting on this satellite
You look directly overhead and see a plane exactly 1.2·km above the ground, flying faster than the speed of sound. Find the angle of the shock wave cone
A point P is on a rim of a wheel of radius 2.0m. At time t=0 wheel is at rest and P is on the x-axis. The wheel undergoes a uniform angular acceleration of 0.01 rad/s2 about the center O. Find out the time t, when P returns to an original position on..
An object 9 cm tall is placed at the zero mark of a meterstick. A spherical mirror located at some point on the meterstick creates an image of the object that is upright, 4 cm tall, and located at the 49.0 cm mark of the meterstick.
The acceleration of gravity at the surface of the moon is approximately 1/6 that at the surface of the earth (9.8 m/s2). What is the weight of an astronaut standing on the moon
To increase the resolving power of a microscope, the object and the objective are immersed in oil (n = 1.54), what is the limiting angle of resolution with the oil
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