Master Physics with Fun Quizzes & Brain Teasers!

are there really dead stars in the sky?
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An Astronaut on the Moon drops a rock straight downward from a height of 1.25 meters. If the acceleration of gravity on the Moon is 1.62 meters per second squared, what is the speed of the rock just before it lands?
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Question 5 of 10Two hockey pucks, each with a mass of 0.15 kg, slide across the ice andcollide. Before the collision, puck 1 is moving 14 m/s to the west and puck 2is moving 10 m/s to the east. After the collision, puck 1 is moving at 10 m/sto the east. What is the velocity of puck 2?A. 14 m/s eastB. 10 m/s westC. 10 m/s eastD. 14 m/s west
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Which types of data should be modified to change the rate of rotation?(1 point)o the number of loops in the coil and the distance from the source of the currento the number of loops in the coil and the electric currentthe dimensions of coils and the distance from the source of the currento the dimensions of the coils and the electric current
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Someone help please.....A person jogs 4.0 km in 32 minutes, then 2.0 km in 22 minutes, and finally 1.0 km in 16 minutes. What is the jogger's average speed in km per minute?
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10. A force of 24 N was required to accelerate an object at a rate of 4 m/s-. What was the object's mass? 11It look 2.3 seconds for a car's velocity to change from 20 m/s to 35 m/s. The mass of the car was 1370 kg. What force was required to cause the acceleration? (Hint: First calculate the acceleration.)
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Newton's second law of motion is also known asa) quantitative law of motionb) quantitative law of force c) qualitative law of motion d) qualitative law of force
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PLEASE PLEASE HELP PICTURE INCLUDED
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why a dam is thicker at the bottom than it's top
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When you cook a marshmallow on a metal poker tool over an open flame, energy is transferred. Identify the three different ways thermal energy is transferred in this situation. Be sure to name the specific places or phenomenon in this system where each of the types of thermal energy transfer is occurring and the direction the energy is being transferred (from what to what).
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Both the X- and Y-components of a vector are doubled. Which of the following describes what happens to the resulting Vector?a) Magnitude increases by (2b) Magnitude increases by (2, and the direction changes c) Magnitude increases by 2d) Magnitude increases by 2, and the direction changes
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How is Impulse related to Force?
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10. The electron dot diagram for the element Ne would have
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PLEASE PLEASE HELP PICTURE INCLUDED
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The magnitude of vector A is 10. Which of the following could be the components of A?a) Ax= 5 , Ay= 5b) Ax= 6 , Ay= 8c) Ax= 7 , Ay= 9d) Ax= 10 , Ay= 10
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Target games are a category of games where the participant propels an object, preferably with a high degree of accuracy, at a target.
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A school bus moves slower and slower. Using what you have learned about forces, explain why the bus moves slower and slower.
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Which of the following is not a part of the appendicular skeleton a. femurb. scapulac.phalangesd.hyoid
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A car start from rest accelerate uniformly at rate of 2 m/sec2. Its velocity after 5 seconds will be:
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A book with a mass of 1.5 kg rests on the edge of a desk 0.75 m above thefloor. Given that the acceleration due to gravity is 9.8 m/s2, what is the book'spotential energy? apex
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What happens to particle spacing when temperature increase, What we call this process?
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SOMEONE PLEASE PLEASE HELP QUICK PICTURE INCLUDED
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Why is the unit of momentum called derived unit
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If a car that is moving 20.0 m/s has a momentum of 29000 kgm/s, what mass is the car?
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