Physics

a ball of mass is dropped. what is the formula for the impulse exerted on the ball from the instant it is dropped to an arbitrary time later?
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The top view below shows a record that is spinning counterclockwise at a constant rate. Which of the following statements are true? Choose all that apply.-A and B have the same linear velocity-A has a greater linear velocity than B-B has a greater linear velocity than A-A and B have the same angular velocity-A has a greater angular velocity than B-B has a greater angular velocity than A
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A student builds an electromagnet using a variable power source and 40 turns of wire. The electromagnet is used to pick up metal paper clips. The student changes the voltage and counts the number of paper clips that are picked up. Which table could be the data the student collected?Table ATable BTable CTable D
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which of the following appliances has the lowest typical energy costs? (1 point) group of answer choices dishwasher microwave oven washing machine refrigerator
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What is the contour interval of this map?v
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an electron and a proton are each placed at rest in a uniform electric field of magnitude 498 n/c. calculate the speed of each particle 44.4 ns after being released.
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a bowling ball has a mass of 6 kg. if you slowly roll the ball off the edge of a table 1.5 m high table, what is the kinetic energy of the ball when it hits the ground?
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37. a wheel has a constant angular acceleration of 5.0rad/s2 . starting from rest, it turns through 300 rad. (a) what is its final angular velocity? (b) how much time elapses while it turns through the 300 radians?
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how many springs does it take to model the thermal energy of diamond and how many for solid argon? explain/justify your answer using appropriate components of the particle model of thermal energy and/or previous models we have used.
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a cell phone battery holds a maximum charge of 1.420 ah. how long will it take a charger to fully charge the battery if it starts with zero charge and is charged at a constant rate of 900.0 ma?
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calculate the acceleration of a 330000- kg jumbo jet just before takeoff when the thrust on the aircraft is 160000 n .
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determine the values of the mass m for which this system is, respectively, underdamped, overdamped and critically damped.
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an incompressible substance with a density of 1000 kg/m3 is isothermally compressed from 100 to 1000 kpa. determine the change in enthalpy. multiple choice question. 900 kj/kg 0 kj/kg 10 kj/kg 0.9 kj/kg
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alston realizes that he wasn't paying attention when thana ran the simulation for which the charge was set to zero, and asks thana to describe the particle's motion. which response is correct?
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two 4.0cm*4.0cm metal plates are separated by a 0.20-mm-thick piece of teflon. a. what is the capacitance? b. what is the maximum potential difference between the plates?
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would a point closer to the center of the hard drive have a higher, lower, or the same linear acceleration?
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You're designing an external defibrillator that discharges a capacitor through the patient's body, providing a pulse that stops ventricular fibrillation. Specifications call for a capacitor storing 250 J of energy; when discharged through a body with R = 48 transthoracic resistance, the capacitor voltage is to drop to half its initial value in 10 ms.A) Determine the capacitance (to the nearest ) 10 F).B) Determine initial capacitor voltage (to the nearest 100 V) that meet these specs.I need both correct answers to 2 significant figures.
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TRUE/FALSE. when air masses of different densities collide, the less dense air mass is forced to rise through frontal lifting.
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how far is the spring compressed question undergrad physics inclined plane where height is not given
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When a ball is thrown into the air, its kinetic energy is lowestA at its highest point.B. at the moment it is released.C. as it begins to fall back to the ground.
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6. An 8000.0 kg truck starts off from rest and reaches a velocity of 18.0 m/s in 6.00 seconds. What is the trucks acceleration and how much momentum does it have after it has reached this final velocity?
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What is the defining property of an mechanical wave?A. It travels by compressing particles.B. It travels up and down.C. It does not need a medium to travel.D. It needs a medium to travel.
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one cycle of the power dissipated by a resistor ( ) is given by this periodic signal repeats in both directions of time. what is the amplitude of the pwm voltage signal applied across the 500- resistor
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which of the following are irreversible thermodynamic processes? check all that apply. which of the following are irreversible thermodynamic processes?check all that apply. the slow and adiabatic expansion of a gas the spontaneous flow of heat from a hot body to a cooler body the conversion of work to heat by friction the free expansion of a gas
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