Physics

Select the correct answer. The Cretaceous-Paleogene was a mass extinction event in which nearly every single large, land-dwelling dinosaur went extinct. Which of the following did not result from this extinction event? A. Diverse species of animals began to evolve. B. Meteorites struck the region that Mexico now occupies. C. Clouds of dust and gas billowed into Earths atmosphere. D. Ecological niches were left empty but with the potential to be filled.
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Energy associated with moving objects or that could move later is?
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Two coins lie 1.5 meters apart on a table. They carry identical electric charges. Approximately howlarge is the charge on each coin if each coin experiences a force of 2.0 N
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!Necesito ayuda:Un movil parte del reposo y en 5seg adquiere una rapidez de 12m/seg.Calcular la distancia recorrida.
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ian pushed a piano across the room with the correct amount of force. Which of newtons laws is this? Newtons 1st, 2nd, 3rd, or 1st and 2nd law?
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State the relationship between the mass of trolley and acceleration of the trolley?
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At am outdoor market, a bunch of bananas is set into oscillatory motion with an amplitude of 29.8981 cm on spring with a spring constant
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3) 4 electrons are placed - one electron per corner - at the corners of a square of side 1 meter. One fixed proton is placed in the middle of the square.The 4 electrons are held in place by some mechanism. The 4 electrons are released by the mechanism at the same time. They move and reach the corners of a square of side 0.8 meters, and keep on moving . Find the velocity of each electron at the corners of the square of side 0.8 meters.
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Tyson has been assigned to the offensive line as a left guard on his football team which requires him to make explosive movements and push other players body weight in a specific direction. Which sport skill does he demonstrate as his dominant skill based on this position assignment?
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The wireless system is operating at 2GHz. A base station and a mobile unit are separated by 16km. The maximum gain of the transmitting antenna at the base station is 20dB. The input power to the transmitter is 100W, and the power received by the antenna is 5nW. The antennas are aligned, and there are no re ections or loses. What will be the received power if the distance between the mobile unit and the base station increases to 20km?
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PLEASE HELP! I'LL GIVE BRAINLEST
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A 3 kg block collides with a massless spring of spring constant 98 N/m attached to a wall. The speed of the block was observed to be 1.5 m/s at the moment of collision. The acceleration of gravity is 9.8 m/s 2 . How far does the spring compress if the surface on which the mass moves is frictionless
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A fisherman sitting on the end of a pier notices that 6 wave crests pass him in 3 seconds. What is the frequency of the waves?9.0 Hz18.0 Hz.20 Hz4.5 Hz
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7. Thermal energy depends upon the______ and _____ of an object?
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Iron ball sinks in water but not in mercury. Why?
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can someone please help me !!!!
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PLEASE HELP! I'LL GIVE BRAINLEST
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You are trying to catch the mutated mouse and you have a ropethat both you and the mouse are pulling with a force of 500 Newtons,but the rope does not move.How much work is done?PLS ANSWER ASAP! WILL MARK AS BRAINLYIST!!!!!time left (5:00)!!
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32. Assume the helium-neon lasers commonly used in student physics laboratories have power outputs of 0.500 mW. (a) If such a laser beam is projected onto a circular spot 1.00 mm in diameter, what is its intensity
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which of the following has the most kinetic energy A: stretching a rubber band B: a jet flying through the air C: trowing a paper airplane D: pitching a baseball
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What is the net force if you pull a cart to the right with 5N offorce and a friend pushes the left to the left with 5 N of force
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If a wave has a frequency of 5 hertz, the period for one wave cycle will be
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do opposite poles repel true or false?
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How does the mass of a satellite, moon or asteroid affect its orbital speed?
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