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A 190 pF capacitor is charged to a potential difference of 120 V, and the charging battery is disconnected. The capacitor is then connected in parallel with a second (initially uncharged) capacitor. If the measured potential difference drops to 100 V, what is the capacitance of this second capacitor? (pF)
Determine the maximum percent uncertainty it will produce in this experiment if we did not align the apparatus to minimize its effects
Two particles with masses 2m and 6m are moving toward each other along the x axis with the same initial speeds vi. Find the final speeds of the particles
Tension is maintained in a string as in the figure below. What is the mass per unit length of the string
A wheel rotates about a horizontal axis, as shown in the figure. It has an outer radius R1 = 18.8 cm and mass M1 = 4.51 kg. What is the acceleration of the hanging weight after it is released
A car with a mass of 950 kg is moving to the right with a constant speed of 1.69 m/s, What is the total force on the car if it is moving to the left
1 polymer diffusion the figure below shows the result of a particle tracking experiment where lateral positions of
An orchestra is tuning its instruments using a tone at a frequency of 440 Hz. A man comes zipping by on a very quiet, electric scooter at a speed of 28 m/s. What tone does the man hear as he approaches the orchestra
The surface area of an adult human is about 1.8 m^2. Suppose a person with a skin temperature of 34C is standing nude in a room where the air is 25C but the walls are 17C. What is the person's net radiation loss to the walls
A steel ball is dropped onto a hard floor from a height of 1.55 m and rebounds to a height of 1.45 m. (Assume that the positive direction is upward.) Calculate its velocity just before it strikes the floor
q1. a student who weighs 510 n is wearing a backpack that weighs 70 n. the student is standing still on a level ground.
A roofer accidently drops a bundle of shingles. If it hits the ground with a speed of 86 m/s, how fast was it moving 3 seconds earlier (g=10 m/s/s)
A 2 kg rock is released from rest at a height of 29 m. neglect air resistance and determine the kinetic energy, gravitational potential energy, and total mechanical energy at each of the following heights: 20m; 15m; 5m; 9m.
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