Physics

The displacement of thoughts, feelings, fears, wishes, and conflicts from past relationships onto new relationships is called _____.
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Astronomers have no theoretical explanation for the ""hot Jupiters"" observed orbiting some other stars. (T/F)
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Suppose you want to move a big rock in your yard. It is about waist high and 4 feet long, has a volume of 1.2 m3 and a density of 2.5 g/cm3. How much does it weigh, in units of lbs?
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Calculate the magnitude of the gravitational force exerted by the Moon on a 79 kg human standing on the surface of the Moon. (The mass of the Moon is 7.4 1022 kg and its radius is 1.7 106 m.)
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Kinetic energy is the energy of motion. How could you determine how much kinetic energy an object has? A. by finding its speed and direction B. by finding its mass and speed C. by finding its height and width D. by finding its position and form
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The total amount of energy contained in an object.
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A toy roller coaster cart has a mass of 2kg. The track of the roller coaster has a semicircular valley with a radius of 1.2 meters. If the cart has a speed of 8 m/s at the very bottom of the valley, find the amount of centripetal force necessary to complete the motion
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How many conditions does the NEC list whereby conductors shall be considered to be outside of a building or other structure?
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Kellie jogs 6.0 km in 54 minutes, then 1.0 km in 16 minutes. What is her average speed in km/min please show your work
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A student who weighs 550 N is wearing a backpack that weighs 80 N. The student is standing still on level ground. Give your answers to the following questions in newtons. Remember, enter only the number; don't try to enter the units.a) What is the magnitude of the net force on the student?b) What is the magnitude of the contact force on the student by the backpack?c) What is the magnitude of the contact force on the student by the ground?
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A photographer uses his camera, whose lens has a 50mm focal length, to focus on an object 5.0m away. He then wants to take a picture of an object that is 60cm away.How far must the lens move to focus on this second object?
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These are equal and opposite forces that do not cause a change in position or motion.Please answer quickly!
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During a braking test, a car is brought to rest beginning from an initial speed of 60 mi/hr in a distance of 120 ft. With the same constant deceleration, what would be the stopping distance s from an initial speed of 80 mi/hr?
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What fraction of the copper's electrons has been removed? Each copper atom has 29 protons, and copper has an atomic mass of 63.5.
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A box slides down a slope described by the equation y=(0.05 x2)m, where x is in meters. If the box has x components of velocity and acceleration vX= -4m/s and aX= -1.2m/s@ at x = 3m, determine the corresponding y components of velocity and acceleration at this instant
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In terms of the variables in the problem, determine the time, t, after the launch it takes the balloon to reach the target. Your answer should not include h.
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A hot-water bottle contains 715 g of water at 51C. If the liquid water cools to body temperature (37 C), how many kilojoules of heat could be transferred to sore muscles?
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As magnification increases, the area of the field of view _______, the depth of the field of view _________, the working distance ______, and the amount of light required ____________.
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A girl rides her bike 5.4 km due east. While riding she experiences a resistive force from the air that has a magnitude of 3.1 N and points due west. She then turns around and rides due west, back to her starting point. The resistive force from the air on the return trip has a magnitude of 3.3 N and points due east.?
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can someone please simplify and explain what displacement and instantaneous and also scientific notation and velocity to me in a clear, simplified way basically how you'd explain it to a 5th graderthanks in advance
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While pushing a refrigerator up a ramp, there would be less friction to overcome if you used a dolly because of the wheels. So the efficiency of the ramp would be ________________________ with the use of the dolly.
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An unbalanced force is defined as a force that __________. allows an object to remain at rest cause an object to accelerate in a direction opposite to the unbalanced force is not canceled out by one or more other forces acting in other directions allows an object to move at constant speed
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Specifically, I do not know the answer to 18, but if someone could tell me the answers to all of them that would be great.
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You pull a 100 N object up a ramp with only 20 N of force.Find MA.
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