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A baseball approaches home plate at a speed of 45.0 m/s, moving horizontally just before being hit with a bat. The batter hits a pop-up such that after hitting the bat, the baseball is moving at 55.0 m/s straight up. The ball has a mass of 145 g and is in contact by the bat for 2.00 ms. What is the average vector force the ball exerts on the bat through their interaction?
A 497-turn solenoid has a radius of 8.75 mm and an overall length of 12.4 cm. If the solenoid is connected in series with a 2.50-? resistor and a battery, what is the time constant of the circuit
A mole of air in a closed container is initially at 300k. Suppose that you now add 10 J of heat to the air, without doing any work on it, what is the total thermal energy of the air
A large capacitance of 1.80 mF is needed for a certain application, Calculate the volume of Teflon alone in the capacitor
The total cross-sectional area of the load-bearing calcifiedportion of the two forearm bones (radius and ulna) is approximately2.4 cm2. what is the compressional stress that the arm withstands during the crash
What imperfection in the operation of the eye causes farsightedness? What type of lens is used to correct this? What imperfection in the operation of the eye causes nearsightedness? What type of lens is used to correct this?
A 13.0 k? resistor and a capacitor are connected in series and then a 12.0 V potential difference is suddenly applied across them. Calculate the time constant of the circuit
equal moles of helium and nitrogen were used to fill a 2.6 liter latex balloon porous membrane. it was determined that
The car has just achieved double its initial velocity when the driver spots a police officer behind him and applies the brakes. The car then slows down, coming to rest at the stoplight ahead.
A child's toy consists of a piece of plastic attached to a spring. The spring is compressed against the floor a distance of 2.0 cm and released. If the spring constant is 85 N/m, what is the magnitude of spring force acting on the toy at the moment i..
A 2000-kg elevator is rising and its speed is increasing at 4 m/s^2. What is the tension in the elevator cable
Two balls make up a closed system. Ball A has315 J of energy and ball B has767 J. After they collide, ball A has605 J. How much energy does ball Bhave after they collide?
On a frozen pond, a 7 kg sled is given a kick that imparts to it an initial speed of v0 = 2.3 m/s. find the distance the sled moves before coming to rest
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