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At a grinding wheel has an angular velocity of 27.0 . It has a constant angular acceleration of 35.0 until a circuit breaker trips at time = 2.10 . From then on, it turns through an angle 438 as it coasts to a stop at constant angular acceleration.
Through what total angle did the wheel turn between and the time it stopped?
At what time did it stop?
What was its acceleration as it slowed down?
A baseball approaches home plate at a speed of 48.0 m/s, moving horizontally just before being hit by a bat. What is force on bat
Two 53 {rm g} blocks are held 30 {rm cm} above a table. One of them is just touching a 50-long spring. The blocks are released at the same time. The block on the left hits the table at accurately the same instant as the block on the right first comes..
Two charges of +0.250 C are placed at the points (1.25 mm, 0) and (-1.25 mm, 0). A third charge of -0.450 C is placed at the origin. a. What is the electric field at the point (0, 2.20 mm)? b. At what point on the y-axis will E be zero? Show graph..
An ice-making machine operates in a Carnot cycle. It takes heat from water at 0.0 oC and rejects heat to a room at 24.0 oC. How much energy must be supplied to the device
a charged plate holds 3nC of charge equally distributed on the plates surface area. find the constant electric field near the surface of this plate
A satellite is in a circular orbit about the earth (M = 5.98 x 1024 kg). The period of the satellite is 6.84 x 104 s. What is the speed at which the satellite travels
A bar-shaped piece of silicon at room temperature is one inch inlength and has a 100 μm2 cross-sectional area (i.e. 10x10μm). It is doped with phosphorous to a concentration of1017/cm3. Find the electrical current through the bar when avoltage of ..
The output from a one curie Co60 source is 1.25 R/hr at one meter. What is the radiation intensity at three meters from a 4 Curie source
q1. a ranger in a national park is driving at 52 kmh when a deer jumps onto the road 86 m ahead of the vehicle. after a
A 9.3-V battery, a 5.04-? resistor, and a 10.9-H inductor are connected in series. After the current in the circuit has reached its maximum value, calculate the following. the power being supplied by the battery
A grating spectrometer is used to resolve third order peaks from two wavelengths of ?1 = 455.00 nm, What is the minimum number of slits this grating must have
q1. a hydrogen atom has a diameter of around 1.05times10-10 m as defined by the diameter of the spherical electron
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