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A 5.3kg box is on a frictionless 36^\circ slope and is connected via a massless string over a massless, frictionless pulley to a hanging 1.6kg weight. A- What is the tension in the string if the 5.3kg box is held in place, so that it cannot move? B- If the box is then released, which way will it move on the slope? C- What is the tension in the string once the box begins to move?
Calculate the absolute pressure at the bottom of a freshwater lake at a point whose depth is 26.2 m
A rifle with a weight of 20 N fires a 3.5-g bullet with a speed of 250 m/s. (a) Find the recoil speed of the rifle. Incorrect: Your answer is incorrect. Your response differs from the correct answer by more than 10%. Double check your calculations. m..
An LED’s color is determined by the energy needed to shift an electron across the band gap in the semiconductor from which the LED is made. Because blue photons have more energy than green photons, the development of blue LEDs has been slow. The mate..
A 3.60-kg object is attached to a spring and placed on frictionless, horizontal surface. A horizontal force of 9.0 N is required to hold the object at rest when it is pulled 0.200 m from its equilibrium position, Where does this maximum speed occur
In an engine, a piston oscillates with simple harmonic motion so that its position varies according to the expression, x = 3.00 cos 5t + ? 5, Find the period and amplitude of the motion
A person pushes a 16.2-kg shopping cart at a constant velocity for a distance of 27.5 m on a flat horizontal surface. She pushes in a direction 32.3 ° below the horizontal. A 35.3-N frictional force opposes the motion of the cart. (a) What is the mag..
A ceiling fan is turned on and a net torque of 1.8 N·m applied to the blades. What is the angular acceleration of the blades
During the first stage of its launch, a space shuttle goes from rest to 4956 km/hwhile rising a vertical distance of 45.0km . Assume constant acceleration and no variation in g over this distance. A)What is the acceleration of the shuttle?
A sinusoidal wave of wavelength 1.91 m and amplitude 0.159 m travels with a speed of 0.743 m/s on a string. Find its angular wave number
A uniform plate of height 1.170 m is cut in the form of a parabolic section. The lower boundary of the plate is defined by: y = 1.600 x2. Find the moment of inertia of the plate about the y-axis
There are three masses m1 = 2.0 kg, m2 = 5.0 kg and m3 = 7.0 kg. The mass are all affixed to a massless rod of length 15cm. Calculate the center of mass of the system
An ideal gas is brought throught an isothermal compression process. what are the temperature T of the the gas and the final pressure Pt
A current with sinusoidal time-dependence, whose peak value is 6.55 A and frequency is 879 cycles per second, Calculate the average power dissipated by the loop
A string with both ends held fixed is vibrating in its third harmonic. The waves have a speed of 192m/s and a frequency of 200Hz. Calculate the maximum transverse velocity of the string at this point
A 8.0 kg block oscillates with an amplitude of 0.070 m on a light spring constant k= 13 N/m. What is the maximun value of the block's velocity
light with a wavelength range of 145-295 nm shines on a silicon surface in a photoelectric effect apparatus, What is the longest wavelength of the light that will eject electrons from the silicon surface
A 2000 kg statue falls into a circular jacuzzi with a diameter of 5 m, What is the average density of the statue
A horizontal force F{x} =F0 (1-t / T), which decreases from F0 at t =0 to zero at t =T, is exerted on the object. Find an expression for the object's velocity
Find the electric field at the center of a square of side d = 1.0 cm with charges of q = +9.0 µC at each corner
What is the net force acting on a 5-kg objest falling on earth, what is the mass of object on moon
Transcranial magnetic stimulation (TMS) is a noninvasive technique used to stimulate regions of the human brain. Determine the induced emf within a circle of tissue of radius 1.2 mm
If the contact time with the sidewalk is 1800s, what is the magnitude of an average force exerted on the superball by the sidewalk.
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