Physics

What happens when a neutral atom gains an electrons?
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Friction and air resistance are forces that always:1.) Balance out, having no effect on the net force. 2.) Act in the opposite direction to an object's motion, tending to slow it down. 3.) Pull objects down towards the center of the Earth. 4.) Cause objects to speed up.
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Match the choices below to the correct description. Drag the terms on the left to the appropriate blanks on the right. ResetHelp blank this body wave is a compressional wave. this body wave is a compressional wave. blank this body wave is a shear wave. this body wave is a shear wave. blank this surface wave moves from side to side. this surface wave moves from side to side. blank this surface wave moves up and down. this surface wave moves up and down.
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Jovian planets have rings because:__________. a. their thick gaseous atmospheres would disintegrate any small rock that enter them b. there is too much material to have fit into the ball of each planet c. tidal forces prevent the material in rings from forming into moons d. Jovian planets rotate very rapidly, and some material near the equator of these planets was flung outward, forming the rings e. tidal forces cause volcanic eruptions on some moons, and part of this material subsequently escaped the gravity of the moons, forming the rings.
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The image shows the magnetic field lines around a magnet.Which statements are true for this magnet?- the right pole is the south pole - the left pole is the south pole - the left pole is the north pole - the right pole is the north pole Choose all that apply
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In the the table there is 20 kj of coal, how much energy in joules is 1g of coal?
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A 101 kg basketball player crouches down 0.380 m while waiting to jump. After exerting a force on the floor through this 0.380 m, his feet leave the floor and his center of gravity rises 0.920 m above its normal standing erect position. (a) Using energy considerations, calculate his velocity (in m/s) when he leaves the floor. m/s (b) What average force (in N) did he exert on the floor
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Which force is most important inside an atom?O A. GravityO B. Air resistanceO C. FrictionO D. Strong nuclear force
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I have always wondered if the saying it was hot enough to fry an egg on the sidewalk could 20 points be true. Please describe how you would determine if this could really happen. State any assumptions you would make. State any additional information that you would need and what you would do with the additional information
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A charged particle (charge 1.6x10-19 C and mass 1.67x10-27 kg) is initially moving with a velocity of 2x105 m/s and then moves into a region having a magnetic field and an electric field (6x104 V/m). The direction of initial velocity is perpendicular to the electric field and magnetic field. If the charged particle keep moving in the original direction without being deflected, what is the magnitude of the magnetic field
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what happens during subduction
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Fluid mechanics questions and answers
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when a metal reacts with a non-metal it forms what???
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A 2018 Tesla Model S has a horsepower of 518. How many watts of power does this car model have?
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p me have no brain please help I just wanna get through the yearAccording to the law of conservation of mass, what is the mass of sodium oxide (Na20) formed in this reaction? 4Na 91.96 g 02 32.00 g 2Na 0 ? A. 247.92 grams B. 123.96 grams C. 61.68 grams D. 495.84 grams
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Two moving objects have the same momentum. Object 1 has three times the mass of Object 2; therefore, Object 1 has:the same the velocity of Object 2three times the velocity of Object 2nine times the velocity of Object 2one-third the velocity of Object 2one-ninth the velocity of Object 2
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How much force does it take to accelerate a 3.50 kg mass from 3.00 m/s to 17.0 m/s in a time of 2.00 seconds?
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The steering wheel of a car has a radius of 0.19 m, and the steering wheel of a truck has a radius of 0.25 m. The same force is applied in the same direction to each steering wheel. What is the ratio of the torque produced by this force in the truck to the torque produced in the car
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A 2.0 kg sphere with a velocity of 6.0 m/s collides head-on and elastically with a stationary 10 kg sphere
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A wave has a frequency of 2 Hz. Find its period
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State two advantages of thermal expansion
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Can anybody help in number 6?
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Two points on a progressive wave are out of phase by 0.41 rad.What is this phase difference?[1 mark]A 23 [e]B 47 [e]C 74 [e]D 148 [e]
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A machine raised a load of 360N through a distance of 0.2m. The effort, a force of 50N moved 1.8m during the process. Calculate the efficiency of the machine.Select one:a. 40%b. 100%c. 80%d. 60%
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