Master Physics with Fun Quizzes & Brain Teasers!

Ou pull straight up on the string of a yo-yo with a force 0.235 n, and while your hand is moving up a distance 0.18 m, the yo-yo moves down a distance 0.70 m. the mass of the yo-yo is 0.025 kg, and it was initially moving downward with speed 0.5 m/s and angular speed 124 rad/s. what is the increase in the translational kinetic energy of the yo-yo
1 Answer
If the electric potential at point A in the electric field created bya point charge of 3. 3 * 10-11 C is 0. 6 V, what's the distancebetween point A and the point charge? Estimate kas 9. 00 x109Nm2/C2
1 Answer
Titan, with a radius of 2. 58 x 10^6 m, is the largest moon of the planet Saturn. If the mass of Titan is 1. 35 x10^23 kg, what is the acceleration due to gravity on the surface of this moon?A. 1. 35 m/s^2B. 3. 49 m/s^2C. 3. 49 x 10^6 m/s^2D. 1. 35 x 10^6 m/s^2
1 Answer
You find some limestone rock in southern Indiana and notice that it has fossil trilobites in it. Later you find the same fossil trilobites in a limestone in Colorado. From this you determine that the two rock types were deposited during the same time period using what concept or principle?
1 Answer
A pumpkin was rolling down a hill that is 12. 3 miles long from top to bottom. The pumpkin achieved a final velocity of 42. 4 m/s and it took3. 5 minutes to roll down the hill The pumpkin had a mass of 4780 grams. What momentum AND force did the pumpkin have at thebottom of the hill?
1 Answer
How old was isaac newton when in 1666 he formulated the theory of universal gravity?
1 Answer
Robert and his younger brother Jake decide to go fishing in a nearby lake. Just before they cast off, they are both sitting at the back of the boat and the bow of the boat is touching the pier. Robert notices that they have left the fishing bait on the pier and asks Jake to go get the bait. Jake has a mass of 59. 5 kg and an arm reach of 50. 0 cm, Robert has a mass of 87. 5 kg, and the boat has a mass of 83. 0 kg and is 2. 70 m long. Determine the distance the boat moves away from the pier as Jake walks to the front of th
1 Answer
3. A slinky has a spring constant of 160 N/m. How much work is done on the slinkyto stretch it 0. 50 meters horizontally across a table?
1 Answer
If the force between two charges is initially 1800 N then what will it be if one of the charges is moved 3x farther away?
1 Answer
ILL MARK YOU BRAINIEST IF U ANSWER PLEASE1. Suppose the government passed a law saying, 'everyone must use an electric toothbrush. " use the four criteria to assess this change in the system of brushing your teeth2. What are two methods of support used to keep a system operating safely and efficiently3. A police system lifts a 500-N Weight A distance of 1. 5m. Marina pulls the rope A distance of 9. 0m, exerting a Force of 100 N. a) what is the mechanical advantage of this pulley systemb) What input did marina do on the roadc) what useful output did the rope do on the weightd) what is the efficiency of the pulley systemTHIS IS GRADE 8 PHYSICS PLEASE ANSWER
1 Answer
A. 149 kg baseball moving at 17. 7 m/s is caught by a 57 kg catcher at rest on an ice skating rink,wearing frictionless skates. With what speed does the catcher slide on the ice?Do NOT put in units or it will be marked wrong! The answer's value only! Please round eachanswer to 3 places. Mava + MbVb = (Ma+b)(Va+b)
1 Answer
The 8-kg crank OA, with mass center at G and radius of gyration about O of 0. 22 m, is connected to the 12-kg uniform slender bar AB. A constant counterclockwise torque M is applied to OA so that when OA swings through the vertical position, the speed of B is 8 m/s. Determine the magnitude of the torque M and the angular velocity of OA when it reaches the vertical position
1 Answer
During practice a soccer player kicks a ball and sends it rolling across the grass. Over a short distance the ball slows down and stops which two statements support the idea that energy is conserved in this example? Please Hurry
1 Answer
You are using power pivot for the first time, but you do not see the power pivot tab. what is the most likely reason
1 Answer
4. 2 Water vapour is a gas. Explain the difference and similarities between water in the vapourform and in the liquid form in terms of the kinetic molecular theory (KMT).
1 Answer
5. The planet Mars has a mass about one-tenth the mass of Earth. Even though Mars has two moons, their tidal forces have a much weaker effect on Mars than Earth's moon does on Earth. Why do you think this is ? Use the data in the tables to support your prediction
1 Answer
A group of science students take a class trip to a coastal area to learn more about heat energy and heat transfer concepts. Choose the primary type ofheat transfer that occurs in the situations that follow. If heat transfer is not responsible for the situation that is described, choose letter d, "No heattransfer took place. "A student burned his finger on a hot charcoal grill. O ConductionO ConvectionO RadiationO No heat transfer took place.
1 Answer
Simple machines make work easier. You must left a move this load of Saul for your parents. It is heavy youre using to simple machines when you use this wheel barrow wight simple machine included in the wheelbarrow makes it easier to move the song from one place to another.
1 Answer
importance of pressure in our daily life
1 Answer
A distance of 1.0 102meter separates successivecrests of a periodic wave produced in a shallow tankof water. If a crest passes a point in the tank every 4.0 101second, what is the speed of this wave?
1 Answer
Newtons Second LawAn elevator is moving up at a constant velocity of 2.5 m/s, The passenger has a mass of 85kg.a. Construct a free body diagram for the passenger.b. Calculate the force the floor exerts on the passenger.The elevator now accelerates upward at 2.0 m/s^2.a. What additional force is needed to accelerate the passenger at that acceleration? what is the direction of this force?b. Construct a free body diagram for the passengerUpon reaching the top of the building, the elevator accelerates downward at 3.0 m/s^2.a. how much net force is needed to accelerate the passenger at 3.0 m/s^2? What does this do to the normal force?b. Construct a free body diagram for the passenger, with the magnitude of each force labeled.While descending in the elevator, the cable suddenly breaks. How big is the force on the passenger by the floor? Explain your answer.
1 Answer
What is an example of vertical motion in galileo description?
1 Answer
A man is pulling a 20 kg cart up a hill that is 5 m high if he used 50 N force how far did he pull the cart for
1 Answer
Protostars are difficult to observe because :__________.a. the protostar stage is very short. they are surrounded by cocoons of gas and dust. b. the protostar stage is very short, they are surrounded by cocoons of gas and dust, and they radiate mainly in the infrared. c. they are all so far away that the light hasn't reached us yet. d. they radiate mainly in the infrared.
1 Answer