Physics

How does radiation occurs on earth or in space?
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Three people push a piano on wheels with forces of 130 N to the right, 150 N to the left, and 165 N to the right. What is the strength and direction of the net force on the piano?
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What is the transfer of energy from a wave to the medium through which travels
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A tennis ball with mass 57 g is travelling at 25 m/s [S] when it is intercepted by a tennis racquet for 4.0 ms after which the ball travels at 32 m/s [N]. What is the average force applied to the ball by the racquet?
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In which direction does the magnetic field in the center of the coil point?
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Guys can you please help me with this
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A sphere is released into the atmosphere where air resistance is present. As it falls it loses 7J of potential energy. How much kinetic energy did it gain?
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How far is it between the cafeteria and the swimming pool A. length B. volume C. distance D. displacement
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This Is Tennis hope you know?What are three things you can share to a new player about badminton?(Writeable question)
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The plates of a capacitor are charged using a battery, and they produce an electric field across the separation distance d between them. The two plates are now to be pushed together to a separation of d/2. The pushing together can be done either with the battery connected or with it disconnected. In which case, with the battery connected or disconnected. Is the electric field magnitude greater with the battery connected with the battery disconnected?
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how slow would a 60,000 kg freight car have to roll to have the same momentum as an 80 kg person running 6.5 m/s
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Explain how grality and electric charge are different
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Which of the waves has the smallest amplitude?A. The blue waveB. The orange waveC. The green waveD. The red wave
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We say that the mass comes to rest if, after a certain time, the position of the mass remains within an arbitrary small distance from the equilibrium position. Will the mass ever come to rest
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This graph shows the energy of a reaction over time. Which statement istrue?A. H represents the energy of the products.B. G represents the activation energy.C. G represents the energy of the products.D. F represents the activation energy
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A 2.50 MHz sound wave travels through a pregnant woman's abdomen and is reflected from the fetal heart wall of her unborn baby. The heart wall is moving toward the sound receiver as the heart beats. The reflected sound is then mixed with the transmitted sound, and 78 beats per second are detected. The speed of sound in body tissue is 1500 m/s. Part A Calculate the speed of the fetal heart wall at the instant this measurement is made.
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Which of the following is NOT part of the grain group?
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A car hits a wall with a force of 80 N andhas a mass of 4.5 kg. What was theacceleration of the car?
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A girl kicks a blue ball with a velocity of 20.0 m/s at 65.0o. How long is it in the air?1.85s1.92s13.6s3.69s
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HELP pleaseee which nucleus completes the following equation?
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How much kinetic energy does an object have that is moving at a rate of 30 m/s and has a mass of 4000 kg ?
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What is the equivalent of 0 C in Kelvin?Help will give brainiest
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A 12.0 volt battery is connected in a series to 4 identical 5.00 ohm resistors connected in parallel to each other. What is the current through the battery?
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Sometimes a person cannot clearly see objects close up or far away. To correct this type of vision, bifocals are often used. The top half of the lens is used to view distant objects and the bottom half of the lens is used to view objects close to the eye. Bifocal lenses are used to correct his vision. A diverging lens is used in the top part of the lens to allow the person to clearly see distant objects. 1. What power lens (in diopters) should be used in the top half of the lens to allow her to clearly see distant objects?2. What power lens (in diopters) should be used in the bottom half of the lens to allow him to clearly see objects 25 cm away?
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