PLEASEEE SOOON
(Three questions)
1.) Bailey is pulling Dillon on a sled in the snow at a cons...
Physics, 16.12.2020 21:50 laiba012305
PLEASEEE SOOON
(Three questions)
1.) Bailey is pulling Dillon on a sled in the snow at a constant velocity of 1 m/s. If she is pulling with 250 N perfectly horizontally, and Dillon and the sled have a combined mass of 90 kg, what is the coefficient of friction between the sled and the snow?
2.) Juan and Michael are paddling a canoe in a lake. The total mass of the guys and the canoe is 180 kg. They are providing a paddling force of 450 Newtons and the water is providing a resistance of 375 Newtons. A) What is the acceleration of the canoe? B) If they start from rest, how fast will they be moving in 6 seconds? C) How much distance will they cover in that 6 seconds?
3.) Oscar is driving his 1000kg car to school. He has to stop at the cross walk by the gym, so he puts on his brakes. His car goes from 15 meters/ second to a stop in 5 seconds. How much force did his brakes exert on the car?
Answers: 3
Physics, 22.06.2019 12:00
Lacie kicks a football from ground level at a velocity of 13.9 m/s and at an angle of 25.0° to the ground. how long will the ball be in the air before it lands? how far will the football travel before it lands?
Answers: 1
Physics, 22.06.2019 15:30
Identify the correct relation showing that the radius r of the orbit of a moon of a given planet can be determined from the radius r of the planet, the acceleration of gravity at the surface of the planet, and the time τ required by the moon to complete one full revolution about the planet. determine the acceleration of gravity at the surface of the planet jupiter knowing that r = 71 492 km and that t= 3.551 days and r= 670.9 × 10^3 km for its moon europa.
Answers: 2
Physics, 22.06.2019 21:30
Atoaster oven has a resistive heating element. the average rate at which it dissipates energy as thermal energy is 1.00 \(\rm kw\). in the united states, emf amplitude in household circuits is \(\mathcal e_{\max}\) = 170 \({\rm \; v}\) and the \(\rm ac\) oscillation rate is 60 \(\rm hz\). part a what is the root-mean-square current through the heating element?
Answers: 2
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