12,854 Answered Questions for the topic physics

Physics

10/07/22

how long before the cheetah gets its prey
A cheetah can run at a maximum speed 103 km/h and a gazelle can run at a maximum speed of 76 km/h. If both animals are running at full speed, with the gazelle 84.1 m ahead, how long before the... more
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Physics

10/07/22

how long before the cheetah gets its prey
A cheetah can run at a maximum speed 103 km/h and a gazelle can run at a maximum speed of 76 km/h. If both animals are running at full speed, with the gazelle 84.1 m ahead, how long before the... more
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Physics Math Science

10/06/22

the question couldn't fit so it's down below
The dome of an electrostatic generator is spherical conductor of radius 13cm. It is initially charged so that the electric potential at the surface is 4.5kV. A smaller isolated sphere of radius 5.2... more
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Physics

10/06/22

How long is a projectile in the air for?
Two physics students are playing catch with a baseball. One throws the ball to the other but overshoot and the ball lands on the library roof instead. The ball left the student's hand 2.08 m above... more
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Physics

10/06/22

Landing question
Two kittens are running toward each other, one is named Chloe and the other is named Luna. Luna runs at a speed of 1.40 m/s. If Chloe jumps at an angle of 13.0° with speed 2.00 m/s, at what... more
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Physics

10/06/22

Physics Question
Scientists have recently developed a powerful pulse laser for research materials. Find its energy output in watts for each of the ff. pulse conditions. (a.) 20 J in 10 psec, (b.) 200J in 35 nsec,... more
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Physics

10/05/22

Im not sure how to answer this question
Suppose a large rock is ejected from the volcano with a speed of 27m/s and at an angle of 33 degrees above the horizontal, as shown in the figure below. The rock strikes the ground at an altitude... more
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Physics

10/05/22

Help me pleeeeeeeeeeeeese
What is the velocity of a ball rolling 23.0274 meters in 48.06 seconds?
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Physics

10/05/22

Energy Question
A 70-kg professional cyclist is climbing a mountain road at an average speed of 23.1 km/h. The road has an average slope of 3.4 degrees and is 11.3km long. If the cyclist’s power output averages at... more
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Physics

10/05/22

Physics Force Question
A baseball player throws a ball at a nearby boulder. The ball hits the boulder with a speed of 39 m/s and then bounces straight up to a height of 15 m above the boulder.Assuming that the rotational... more
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Physics

10/05/22

Im not sure how to go about answering this question
A jet plane flying from Darwin, Australia has an air speed of 260m/s in a direction 5 degrees south of west. The plane is in the jet stream which is blowing at 35m/s in a direction 20 degrees south... more
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Physics

10/05/22

Enter your answer in m/s
A truck with a crate in its bed drives around a horizontal circular turn of radius 27.4 m. The crate is held in place only by static friction, and the coefficient of static friction between the... more
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Physics

10/05/22

 (a) the acceleration of the blocks;
A large block on an inclined surface is connected to a small block by a cord, as shown. The masses of the larger and smaller block are 33.0 kg and 26.4 kg, respectively. The angle of the incline... more
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Physics

10/04/22

I need help on my homework
A rocket is launched straight up with the speed of 804 m/s. What is The Rock is displacement after 29.8 seconds.
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Physics

10/04/22

What is her final speed after this elapsed time? how much time did she save compared to continuing at her initial speed?
A cyclist sprints at the end of her road race in an attempt to clinch a victory. She has an initial speed of 9.5m/s9.5m/s and accelerates at a rate of 0.50m/s^2 for 7.00s. Include units as... more
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Physics

10/04/22

A seagull flies with an air speed of 14m/s straight into the wind. Include units as appropriate below. If under these conditions it takes the bird 20min to travel 6km, what is the speed of the wind?
A seagull flies with an air speed of 14m/s14m/s straight into the wind. Include units as appropriate below.(a) If under these conditions it takes the bird 20min20min to travel 6km6km, what is the... more
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Physics

10/04/22

physics question
A cannon is placed on the edge of a 300m high cliff as shown in the figure. The cannon is fired at angle of  = 30 with respect to the horizontal and the cannonball leaves the cannon at a speed of... more
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Physics

10/04/22

physics question
An 8.0kg block is being pulled up a rough incline by a 20 N force. The incline makes an angle of 37 with respect to the horizontal and the coefficient of kinetic friction between the block and the... more
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Physics

10/04/22

physics question
A satellite with a mass of 80kg is in a circular orbit around the Moon. The satellite is a distance of 5.0 x 105 m above the surface of the Moon. (MMOON = 7.4 x 1022 kg, RMOON = 1.7 x 106 m) a.... more
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Physics

10/04/22

Physics question
You apply a horizontal force of 12N to the right to a 3.0kg box that is sliding to the right with an initial speed of 4.0m/s on a rough horizontal surface. The coefficient of kinetic friction... more
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Physics

10/04/22

Physics question
A 20kg block of ice that is sitting on the surface of a frozen lake is being pulled by two people (Anna and Elsa) using ropes. (Assume there is no friction.) Anna is pulling the block to the north... more
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Physics

10/04/22

A soccer ball was kicked toward the goal. The horizontal component of velocity was 22 m/s  and the vertical component was 12 m/s . What is the magnitude of the resultant velocity of the soccer ball?
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10/04/22

A store generates Monday through Thursday sales of $150, $125, $75, and $180. What sales on Friday would give a weekday average of $155?
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Physics

10/03/22

(a) If under these conditions it takes the bird 20min20min to travel 6km6km, what is the speed of the wind?
A seagull flies with an air speed of 14m/s14m/s straight into the wind. Include units as appropriate below.(a) If under these conditions it takes the bird 20min20min to travel 6km6km, what is the... more
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Physics

10/03/22

a) At what angle above the horizontal was the ball thrown if its initial speed was 15m/s, assuming the smaller of the two possible angles was used?
A rugby player passes a ball 8m8m across a field to a teammate, where it is caught at the same height as it left his hand. Treat the effect of air resistance to be negligible. Include units as... more
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