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A 70.0 kg girl lowers herself to the ground from a height of 8.8 m by holding onto a rope running over a pulley to a 54.0 kg sandbag. What is the magnitude of the acceleration of the girl?
if the girl starts from rest, what is her speed when she reaches the ground?
A meat baster consists of a squeeze bulb attached to a plastic tube. When the bulb is squeezed and released, find the absolute pressure PB in the bulb
An electron is accelerated from rest through a potential difference that has a magnitude of 2.70 × 107 V. The mass of the electron is 9.11 × 10-31 kg, What is the relativistic kinetic energy (in joules) of the electron
Three charged particles are placed at corners of an equilateral triangle of side 1.20m. The charges are + 7.0 mc,-8.0 mc and -6.0 mc compute the magnitude and direction of the net force on each due to the other two.
Light of wavelength 600 nm falls on a 0.49 mm wide slit and forms a diffraction pattern on a screen 1.0 m away. Find the position of the first dark band on each side of the central maximum
A 1.00 liters vessel contains a monatomic gas under STPconditions. if 32.0J OF ENERGY is added to the gas (at constant volume) what is the new temperature of the gas
A fly sits on a potter's wheel .30 m from its axle. The wheel's rotational speed decreases from 4.0 rad/s to 2.0 rad/s in 5.0 s. Determine the wheel's average rotational acceleration
The drawing shows three different resistors in two different circuits. The battery has a voltage of V = 27 V, and the resistors have resistances of R1 = 50.0 ?, R2 = 25.0 ? and R3 = 10.0 ?. What is the total power supplied to the two resistors
The surface charge density on an infinite charged plane is -1.5*10^-6 N/m^2, How far does the proton travel before reaching its turning point
How much waste heat is produced by an electrical power station that uses 1.00 ? 1014 J of heat input with an efficiency of 40.0%? What is the ratio of waste heat to work output
There is also blue light which has a transmitted angle in the water that is 0.56 degrees smaller than that of the red light in the water. What is the incident angle of blue light
A glass rod that has been charged to + 17.0nC touches a metal sphere. Afterward, the rod's charge is + 9.0nC
A beam of light is incident from air on the surface of a liquid. If the angle of incidence is 29.5°, find the critical angle for the liquid when surrounded by air
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