Master Physics with Fun Quizzes & Brain Teasers!

while parachuting does this has effectWhile parachuting, a 65.0kg person experiences a downward acceleration of 2.70m/s^2. What is the downward force on the parachute from the person?
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A ball is thrown downward from the top of a building 122 m tall with an initial speed of 38.0 m/s. What will be the speed of this ball when it reaches the ground?
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aGiven that a beam with the geometry and loading indicated (C = 3200 N andD = 1500 N). Determine the moment of the loads on this beam using thereaction at B as the center of moments.
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Now explore friction force. Set the piece of plastic or wood on the table and push it steadily across the tabletop using your fingertip. Note how much opposition to your push you feel. Repeat the steps, but this time push the piece of plastic or wood across a rug, carpet, or piece of fabric. If youre using fabric, be sure to secure the fabric so it doesnt move. How does the opposition to motion on the tabletop compare with that of the rug, carpet, or fabric?
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A 50 kg pitcher throws a baseball with a mass of 0. 15 kg. If the ball is thrown with a positive velocity of 35 m/s and there is no net force on the system, what is the velocity of the pitcher?
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A grating has 2000 slits/cm/cm. How many full spectral orders can be seen (400 to 700 nmnm) when it is illuminated by white light
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Sharon graphed the formula for converting weight from kilograms to pounds. If an item weighs 45 kilograms, what is its weight in pounds?.
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A baseball has a mass of 0. 45 kg and is thrown with a speed of 25 m/s. What is the momentum of the baseball? 0. 018 kg meters squared per second 11 kg meters per second 56 kg meters per second 140 kg meters per second.
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Which of the following elements will bond with oxygen resulting in a 1:1 ratio of oxygen and the element? a. lithium b. boron c. beryllium d. nitrogen
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Recall that impulse = momentum (FAt = Ap and that Ap is just mx v). How long (time) must a group of people pull with a force of 600N on a stalled 1500kg car to give it a velocity of 1.5m/s? Report your answer to the nearest hundredth (X.XX)
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What level of education is required to obtain a position as a insurance billing specialist ?
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A 65kg swimmer pushes off the pool wall and accelerates at 6m/s2. The friction experienced by the swimmer is 100n. What is the magnitude of the force that the swimmer applies on the wall?.
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Water from a vertical pipe emerges as a 10-cm-diameter cylinder and falls straight down 7.5 m into a bucket. The water exits the pipe with a speed of 2.0 m/s. What is the diameter of the column of water as it hits the bucke g
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where do the photons in the cosmic background radiation originate?
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what is a force that slows things down and uses up energy?
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shirley knott, a 65kg astronaut holds a 12kg tank of oxygen, which she throws backwards at 2.2m/s. with what speed does she move?
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Real life examples of atomic physics
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A forklift raises a 1,020 N crate 3. 50 m up to a shelf. How much work is done by the forklift on the crate? The forklift does J of work on the crate.
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Wheel A has a radius of 0.5m and Wheel B has a radius of 0.25m. Both wheels are turning at 200 rpmand 100 rpm (revolutions per minute) each, when we simultaneously apply a brake to them, remaining atrest in 10s and 20s respectively. Find the frequency of each wheel. Find the initial angular velocity ofeach wheel. The angular acceleration of each wheel. Find the time that both wheels will be turning withthe same angular velocity. Find the angular velocity of both wheels at the time found above. Findfor the previous time, the value of the tangential acceleration at a point located on the periphery of both wheels.Find for the previous time the value of the centripetal acceleration at a point located on the periphery of bothwheels. When the wheels are stopped, what total angle will it have turned from the moment we applythe breaks?
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Plains and mountains are examples of formed by processes that shape Earth's surface.
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Describe how to determine the number of electrons using the Periodic Table of the Elements
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A 2 kg block slides down a 30 degrees incline as shown above with an acceleration of 2 m/s?10Which of the following correctly indicates the magnitudes of the forces acting up and down the incline?
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How many wires go into an appliance
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How do you find distance from average velocity and time
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