Physics

a race car goes around a circular track of radius 150 m at speed of 10.0 m/s. How long does it take to complete one lap?
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what factors affect potential energy
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Is TV light is converging rays, divergent rays or parallel rays?
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A desk with a mass of 40kg is being pushed across the classroom and it accelerates at a rate of 5m/s squared . What is the force being applied to the desk?
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You are an astronaut and NASA has asked you to determine how mass and weight change throughout the solar system they have provided you with a rover with a mass of 227 kg on earth what is the rovers mass on the moon if the moon's gravity is 1.60 ms
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Please help, is an electric lamp a luminous object?
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a car moved 120km to the north. what is its displacement?
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Please help this is really confusing
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Mr. Cudd tries riding a bike to see if he still remembers how. As he gains some speed, he accidentally squeezes the front brakes. What happens immediately after is an example of which one of Newtons laws?
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If the hoop has speed vo at the bottom ofthe pipe, what is its speed when it has rolledhalfway up the side of the pipe?
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Pretend you are designing your own home. You often get cold in the winter and want to make this house as energy efficient as possible to keep you warm. Use your knowledge about energy transfer and describe at least 3 things you would include in the design of your home. Be sure to explain why you would include these things.
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Question 1 of 14 Which of the following statements describes a perfectly inelastic collision? O A. An ice hockey player picks up a trophy as he slides past it. O B. A baseball bat hits a baseball into the outfield. O C. A surfer falls off of his surfboard when a wave hits him. D. Two birds collide in midair and fly off in different directions.
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A patient with a family history of cholesterol deposits in the arteries asks her doctor for a recommended vitamin. Which of these vitamins is the doctor likely to recommend?vitamin Dvitamin Cvitamin Bvitamin F
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What do the arrows in this photograph represent?A. Gravity and air resistanceB. An action-reaction force pairC. A pair of unbalanced forces at workD. Friction and air resistance
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what type of particle carries an electric current through a wire
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As a person pushes a box across a floor, the energy from the persons moving arm is transferred to the box, and the box and the floor become warm. During this process, what happens to energy?It is increased. It is conserved.It is decreased. It is created.
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If the radius of Earth were one half what it is now, and the mass were the same, what would be the value of g?
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Two girls are estimating each other's power. One runs up some stepng each other's power. One runs up some steps, and the other times her. Here are theirresults:height of one step = 20 cmnumber of steps = 36mass of runner = 45 kgtime taken = 4.2 sa .Calculate the runner's weight. (Acceleration due to gravity g=10mb .Calculate the increase in the girl's gravitational potential energy as she runs up the steps.c. Calculate her power. Give your answer in kilowatts (kW).
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Plz help me with this question ASAP
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During the 1840s, Americans used the idea of Manifest Destiny to justify the...A. expansion of women's rightsB. acquiring of new territoriesC. repeal of the Missouri CompromiseD. beginning of free public education
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You wish to make a simple amusement park ride in which a steel-wheeled roller-coaster car travels down one long slope, where rolling friction is negligible, and later slows to a stop through kinetic friction between the roller coaster's locked wheels sliding along a horizontal plastic (polystyrene) track. Assume the roller-coaster car (filled with passengers) has a mass of 743.0 kg and starts 83.4 m above the ground. (a) Calculate how fast the car is going when it reaches the bottom of the hill. m/s (b) How much does the thermal energy of the system change during the stopping motion of the car
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NEED HELP ASAP TEST IS DUE TMRWhat is the angular displacement of a wheel with a 3mm radius and an angular speed of 6 rad/s over a time period of 2.5 seconds?
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The potential energy of a 40-kg cannonball is 14000 J. How high was the cannon ball to have this much potential energy?
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When a ball bounces back when you throw it at a wall, what occurs?A- refraction B- reflection C- diffractionD- absorption
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