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True or False? (Select all that apply.)1. All parts of a wheel rotating about a fixedaxis must have the same angular acceleration.2. Angular speed and linear velocity have the samedimensions.3. All parts of a wheel rotating about afixed axis must have the same centripetal acceleration.4. All parts of a wheel rotating about afixed axis must have the same angular speed.
Estimate the percent change in mass δm/m of a block of copper which is heated from 300 K to 400 K. The molar speci?c heat of copper is cP = 2.6·104 J/kmol·K and, its atomic weight is 29.
given 2.50mol of an ideal gas with cv 12.47j?mol?1?k?1 is expanded adiabatically against a constant external pressure
a motorcycle can accelerate at a rate of 5.2 ms2. the rider plans to take the bike on a loop de loop that has a radius
a chartered airplane flies 100 km east, then 350 km north west, and then 150 km at 30 degrees west of south. determine the direction of the last leg of the journey
Presume the child remains horizontal during the fall to the floor. Note that a more complicated fall could result in a head velocity greater or less than the speed you calculate.
A rocket with initial mass of 7.50×103 kg is fired in the vertical direction. Its exhaust gases are ejected at the rate of 4.50×101 kg/s with a relative velocity of 2.200×103 m/s. What is the initial acceleration of the rocket
If a sound wave traveles throught soft tissue a a velocity of 1.54 mm/microsecond for 2203ms. How far has the sound wave traveled using the echo-ranging formula d=ct
The electric field midway between two equal but opposite point charges is 878N/C , and the distance between the charges is 25.0cm. What is the magnitude of the charge on each (in C)?
Suppose a block with mass 2.30kg is resting on a ramp. If the coefficient of static friction between the block and the ramp is 0.420.
A 5.6 box is on a frictionless 44 slope and is connected via a massless string over a massless,What is the tension in the string once the box begins to move
The magnetic field has been measured to be horizontal everywhere along a rectangular path x = 22 cm long and y = 5 cm high. Along the bottom the average magnetic field B1 = 1.3 10-4 tesla, along the sides an average magnetic field B2 = 1.0 10-4 te..
a 480 kg car moving at 14.4 ms hits from behind another car moving at 13.3 ms in the same direction. if the second car
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