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A baseball pitcher throws a baseball horizontally at a linear speed of 42.5 m/s (about 95 mi/h). Before being caught, the baseball travels a horizontal distance of 16.1 m and rotates through an angle of 46.1 rad. The baseball has a radius of 3.67 cm and is rotating about an axis as it travels, much like the earth does. What is the tangential speed of a point on the "equator" of the baseball?
m/s
A motorboat is pointed due south, and its motor gives the boat a constant speed of 5.00 m/s through still water. Find the magnitude and direction of the boat's total velocity
Consider a gas of non-interacting spinless bosons in a 3d space with relativistic energy dispersion law E(p) = cp, find the fraction of atoms condensed into the lowest energy state
A 2.23-m-long rod, as measured in its rest frame, speeds by you longitudinally at 6.11 × 107 m/s. By how many millimeters do you determine the rod has contracted
A defibrillator consists of a 15.3-µF capacitor that is charged to 8.4 kV. What is the average power delivered to the tissues
A 1200 N uniform boom is supported by a cable perpendicular to the boom, as in Figure P8.28. The boom is hinged at the bottom, and a 2000 N weight hangs from its top. Find out the tension in the supporting cable and the components of the reaction ..
The work done by an engine equals one-half the energy it expels to a cooler at 0C. what is the temperature of the heater
Consider a nonconducting rod that would make a great wire except for the fact that it is nonconducting, Find the electric field strength at a point on the axis of the rod
An elevator accelerates upward at 1 m/s2. When the elevator is moving upward at 2 m/s, a bolt drops from the ceiling which is 2.5 m above the?
A 125-turn circular coil of radius 2.75 cm is immersed in a uniform magnetic field that is perpendicular to the plane of the coil. Find the magnitude of the average EMF
An ideal gas initially at 20°C and 199 kPa has a volume of 3.40 L. It undergoes a quasi-static, isothermal expansion until its pressure is reduced to 94 kPa. (a) Find the work done by the gas. J (b) Find the heat added to the gas during the expans..
what is the coefficient of kinetic friction between the box and the tabletop.
A 0.10kg solid rubber ball is attached to the end of a 0.80 m length of light thread. The ball is swung in a vertical circle. Point p, the lowest point of the circle, is 0.20 m above the floor.
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