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1. Imagine holding the above plastic block under water. When released, what is the upward acceleration of the block? (use g = 10 m/s2)
the mean fee path of air molecules at 0 C and 1 ATM is about 2*10^-5 cm. what is the effective molecular diameter of an air molecule
A 878 kg car has four 11.8 kg wheels. When the car is moving, what fraction of the total kinetic energy of the car is due to rotation of the wheels about their axles
Heather and Jerry are standing on a bridge 51 above a river. Heather throws a rock straight down with a speed of 12. Jerry, at accurately the same instant of time, throws a rock straight up with the same speed. Ignore air resistance.
A light spring of force constant k = 156 N/m rests vertically on the bottom of a large beaker of water. A 5.55-kg block of wood (density = 650 kg/m3) is connected to the spring, and block-spring system is allowed to come to static equilibrium. Wha..
The current in a resistor is given by I = (5.14) sin (70 pi t) when a voltage given by V = (180V) sin (70 pi t) is applied to it. What is the period of the voltage source
An isolated conductor has a net charge of +7.90*10^- 6 C and a cavity with a particle of charge q = +2.30*10^-6 C, find the charge on the cavity wall and outer surface
The blue ball moves at an angle of -35° and a velocity of 2.1 meters/second. What is the final y-momentum of the system?
The Space Shuttle travels at a speed of about 7.60 103 m/s. How many football fields (length = 91.4 m) does the Shuttle cover in the blink of an eye
A centrifuge in a medical laboratory rotates at an angular speed of 3400 rev/min. Find the constant angular acceleration of the centrifuge
An electromagnetic wave has an electric field strength of 145 V/m at a point P in space at time t. What is the electric field energy density at P
A puck slides across a smooth, level tabletop at height H at a constant speed vo. What is the algebraic relationship between the distances x and H
Consider a rectangular metal loop of length of 0.15m and width of 0.08m. Determine the emf induced in the wire on the left side of the loop
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