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Question: While conducting a lab experiment, Azah measured that 3.44 E6 J of heat were needed to melt 42.1 kilograms of an unknown substance at its melting point. What is the latent heat of fusion of the substance?
The position of a 1.2kg mass is given by x = (2t^3 - 3t^2)m, where t is in seconds. What is the net horizontal force on the mass at t = 0s
water is poured into a container that has a leak. the mass m of the water is given as a function of time t by m
A 75-kg window air conditioner falls a distance of 6 m to the street below (no one is injured). What was the PE of the air conditioner
A 67.0kg skier is moving at 6.70m/s on a frictionless, horizontal snow-covered plateau when she encounters a rough patch 3.55m long. How much internal energy was generated in crossing the rough patch
0.80 m and the mass of the particle the bob at the end of the cable is 0.24 kg. the pendulum is pulled away from its
Find (a) magnitude and (b) direction of A - B. (Give the direction as a positive angle with respect to due east). Find out the (c) magnitude and (d) direction of B - A. (Give the direction as a positive angle with respect to due west).
Astronaut Hans leaves Earth in a spaceship traveling at a speed of 0.280c relative to the observer Brian at rest on Earth. What angle does the pencil make with the direction of travel
Assuming small amplitudes, set up the differential equations of motion for the double pendulum using the coordinates shown in Figure.
A 15.5 kg mass vibrates in simple harmonic motion with a frequency of 7.9 Hz. It has a maximum displacement from equilibrium of +14 cm at time, t = 0.00 s. What is the position of the mass at time, t = 0.35 s?
A 72 kg skier is going down a slope oriented 37° above the horizontal. Determine the pressure that each ski exerts on the snow
Under some circumstances, a star can collapse into an extremely dense object made mostly of neutrons and called a neutron star. find the angular speed of the neutron star
The two most prominent wavelengths in the light emitted by a hydrogen discharge lamp are 656 nm (red) and 486 nm (blue). What is the distance between the first-order red and blue fringes
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