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A crane lifts a 425kg steel beam vertically upward a distance of 117m. How much work does the crane do on the beam if the beam accelerates upward at 1.8 m/s^2 Neglect frictional forces?
A pump uses a piston of 15 cm diameter which moves 2 cm/s. What is the fluid velocity of a tube 3mm in diameter
Sodium light of wavelength 589nm falls on a diffraction grating and its first-order peak on a screen 60.0cm away falls 3.32cm from the central peak. How many lines per cm does the grating have
A simple harmonic oscillator consists of a block of mass 1.70 kg attached to a spring of spring constant 144 N/m. What is the amplitude of the oscillations
Find out the total work done on the car by the external forces.
A uniformly charged sphere has a potential on its surface of 460 V. At a radial distance of 24 cm from this surface, the potential is 190 V. What is the radius of the sphere
A 2.0cm×2.0cm×6.0cm block floats in water with its long axis vertical. The length of the block above water is 1.0cm
The nucleus of an atom can be modeled as several protons and neutrons closely packed together. Each particle has a mass of 1.67 10-27 kg, Estimate the density of the nucleus of an atom
If a 2-mm diameter pellet is illuminated from the left and the right by laser beams, such with a diameter of 1 cm and a power of 1 megawatt, estime the pressure applied to the pellet, assume all the light that hits the pellet is absorbed.
Oxygen gas having a volume of 1180 cm3 at 47.3°C and 1.00 x 105 Pa expands until its volume is 1900 cm3 and its pressure is 1.08 x 105Pa. determine the final temperature of the sample
A generator connected to an RLC circuit has an rms voltage of 130V and an rms current of 33mA, what is the inductive reactance of the circuit
A couple is defined as two parallel forces, separated by a distance, that have equal magnitudes but opposite directions. A couple only produces a rotation in a specified direction. The moment produced by a couple is known as a couple moment.
A 5000 ohms resistor and a 50uF capacitor are connected in series at t=0 with a 6V battery. The capacitor is initially uncharged. What is the maximum charge stored on the capacitor
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