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As you walk across a synthetic-fiber rug on a cold, dry winter day, you pick up an excess charge of -52 .
The plates of a 3.3 nF parallel-plate capacitor are each 0.27m^2 in area. Part A: How far apart are the plates if there's air between them?
A person fasts for 40 days. During this time, they lose 17 kg of body mass - 13 kg of fat and 4 kg of protein and carbohydrates combined. They have a constant surface area of 1.7 m2, and they sleep
A system has 10^11 binding sites for a protein. Of these sites, 10^5 are originally filled. The system moves to a new arrangement in which 10^4 sites are filled. What is the change in entropy betwe
(a) What is the kinetic energy of the particle as it passes through the origin (0, 0)? (b) At what negative value of y will the particle momentarily stop?
A 250-turn solenoid carries a current of 9.0A. the radius of the solenoid is .075m, and its length is .14m. Determine the magnetic flux through the circular cross-sectional area at the center of the
Charge of 5.00 x 10-9 C and a charge of -4.00 x 10-9 C are separated by a distance of 60.0 cm. Find the position at which a third charge, of 14.0 x 10-9 C, can be placed so that the net electrostatic
An 8.78-kg block slides with an initial speed of 1.62 m/s down a ramp inclined at an angle of 27.1° with the horizontal. The coefficient of kinetic friction between the block and the ramp is 0.7
What is the speed of the alpha particle when it is detected in the laboratory? Assume the thorium nucleus remains at rest. Express your answer to two significant figures and include the appropriate
Two long parallel wires are separated by 2.5 mm. The current in one of the wires is twice the other current. If the magnitude of the force on a 2.0-m length of one of the wires is equal to 4.0 &mic
Assume the area of skin on the worker's palm that would contact a flat panel is 1.0×10^?2 m^2 , then calculate the approximate resistance of the skin of the palm.
Assume all temperatures to be exact, and neglect significant figures for small changes in dimension. What volume is occupied by 190g of oxygen under a pressure of 2.00atm and a temperature of 310K ?
A person throws an object upward with an initial velocity of 20 m/s. Assuming that the object has an initial height of 10m and that g= 9.8 m/s^2. Determine the following: 1.) How long will it take t
Wally Whacko claims to have invented a heat engine that will revolutionize industry. It runs between a hot source at 300^\circ {\rm C} and a cold sink at 25^\circ {\rm C}. He claims that his engine
The current of 0.15 A flows through three resistors, R1 = 20 Ohm, R2 = 50 Ohm, R3 = 65 Ohm, connected in series. What is the power dissipated in the R2 resistor?
Now, you can spin the (roughly) triangular part around by twisting the straightened part between your fingers. Estimate the EMF that you can generate by spinning the hanger in the Earth's magnetic f
Take the example of a wire loop with a changing magnetic flux, and describe what would happen if current were induced opposite to the way it really is.
If only one particle is released from rest, while the other three remain stationary at the three other corners of the square, what is the final speed of the released particle once it is very far awa
Three point charges are on the x axis; q1 is at the origin, q2 is at x = 13.00 m, and q3 is at x = 26.00 m. (a) Find the potential at the point x = 0, y = 13.00 m if q1 = q2 = q3 = 3.10 µC. (b
Please present a "generic" estimate of this quantity that would show how this approximate value follows just from the fact that a crystal consists of atoms bound together by some sort of chemical bo
Suppose 1.0 mol of a monatomic ideal gas initially at 10 L and 330 K is heated at constant volume to 660 K, allowed to expand isothermally to its initial pressure, and finally compressed at constan
A 520 W Carnot engine operates between constant-temperature reservoirs at 109°C and 67°C. (a) What is the rate at which energy is taken in by the engine as heat?
A battery has an internal resistance of 1.3 Ω and a voltage of 48 V. What is the load resistance which causes the voltage to drop to 45.4 V?
When a 125-V emf is placed across two resistors in series, a current of 5.00 A is present in each of the resistors. When the same emf is placed across the same two resistors in parallel, the current