12,762 Answered Questions for the topic physics

Physics

05/16/22

Torque /Physic related problem
To turn a nut, a wrench must create2.25 N*m of torque. If the personexerts a 48.3 N force perpendicular tothe wrench, how far from the nutshould the force be applied?Can someone please give me a... more
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Physics

05/15/22

A wildlife researcher is tracking a flock of geese. The geese fly 5.0

A wildlife researcher is tracking a flock of geese. The geese fly 5.0 km due west, then turn toward the north by 45 ∘ and fly another 3.5 km .How far west are they of their initial position?What is... more
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Physics

05/15/22

A particle rotates in a circle with centripetal acceleration a = 14 m/s^2 .
A particle rotates in a circle with centripetal acceleration a = 14 m/s^2 .What is a if the radius is doubled without changing the particle's speed?What is a if the speed is doubled without... more
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Physics

05/15/22

An old-fashioned LP record rotates at 33⅓ .
An old-fashioned LP record rotates at 33⅓ .What is its frequency in rev/s?What is its period, in seconds?
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Physics

05/15/22

On the Apollo 14 mission to the moon,

On the Apollo 14 mission to the moon, astronaut Alan Shepard hit a golf ball with a golf club improvised from a tool. The acceleration free-fall on the moon is 1/6 of its value on earth. Suppose he... more
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Physics

05/15/22

A ball with a horizontal speed of 1.25 m/s rolls off a bench 1.00 m above the floor.
A ball with a horizontal speed of 1.25 m/s rolls off a bench 1.00 m above the floor.How long will it take the ball to hit the floor?How far from a point on the floor directly below the edge of the... more
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Physics

05/15/22

Starting from rest, several toy cars roll down ramps of differing lengths and angles.
Starting from rest, several toy cars roll down ramps of differing lengths and angles. Rank them according to their speed at the bottom of the ramp, from slowest to fastest. Car A goes down a 10 m ... more
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Physics

05/15/22

A car traveling at 27 m/s runs out of gas while traveling up a 9.0 ∘ slope.
A car traveling at 27 m/s runs out of gas while traveling up a 9.0 ∘ slope.How far will it coast before starting to roll back down?
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Physics

05/15/22

People hoping to travel to other worlds are faced with huge challenges.
People hoping to travel to other worlds are faced with huge challenges. One of the biggest is the time required for a journey. The nearest star is 4.1×10^16 m away. Suppose you had a spacecraft... more
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Physics

05/15/22

physics problem, field of an infinite plane
Without doing any math, explain why the field of an infinite plane, uniformly charged, must be constant. Likewise, explain why the field produced by an infinite, uniformly charged wire must be... more
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Physics Math

05/15/22

physics problem, please help
Use Gauss' law to show that:a) In electrostatic equilibrium, the net charge of a conductor must remain on the surface and the field must be normal to the surface, having modulus equal to σ/∈0 where... more
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Physics

05/14/22

Electromagnetic Induction
A 16-cm-diameter circular loop of wire is placed in a 0.50-T magnetic field. (a) When the plane of the loop isperpendicular to the field lines, what is the magnetic flux through the loop? (b) The... more
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Physics

05/14/22

rotational motion
 Suppose you start an antique car by exerting a force of 290 N on its crank for 0.13 s.f = 290 Nt = 0.13 sd = 0.38 mWhat angular momentum is given to the engine if the handle of the crank is 0.38 m... more
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Physics

05/14/22

rotational motion
A merry-go-round at an amusement park consists of an outer ring of horses and an inner ring of elephants.The ring of eight horses has a radius of rh = 8.7 m. Each of the eight horses has a... more
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Physics

05/12/22

rotational motion
 Suppose you start an antique car by exerting a force of 290 N on its crank for 0.13 s.f = 290 Nt = 0.13 sd = 0.38 mWhat angular momentum is given to the engine if the handle of the crank is 0.38 m... more
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Physics

05/11/22

rotational motion
A merry-go-round at an amusement park consists of an outer ring of horses and an inner ring of elephants.The ring of eight horses has a radius of rh = 8.7 m. Each of the eight horses has a... more
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Physics

05/11/22

rotational motion
  A uniform disc of mass m = 2 kg and radius R = 0.75 m is suspended horizontally by a wire. Refer to the figure. A force of F = 65 N is applied to the edge of the disc tangentially. As a result,... more
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Physics

05/11/22

Linear motion problem
A kid is standing on amerry-go-round 0.825 m fromthe center. Starting from rest,they reach 1.08 rad/s in 3.47 s.What was his linear acceleration?Can someone answer this throughly ?
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Physics

05/11/22

Rotational motion

A kid is standing on amerry-go-round, 1.74 m fromthe center, rotating at 2.38 rad/sWhat is his linear velocity?Could someone answer this thourgly ?
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Physics

05/11/22

I need help please
A rock of mass 3KG is attach to the end of a 2 m long rope. The rock is swung and a vertical circle. That tangential velocity of the rock is 15 M/S. How long does it take in seconds for the rock to... more
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05/11/22

Spiderman stops a train

Background: Spiders can lift up to 8 times their own bodyweightThe force spiderman exerts is constant over the period of time he attempts to stop the train.The info given:The weight of the Train... more
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Physics

05/10/22

find the net electric field at the center of an square
find the net electric field at the center of the square of charges A(+5), B(+5), C(-5), D(-5) microcoulomb at the corners of the square ABCD separated by a distance of 1cm from each other
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Physics

05/09/22

Physic Homework
The “lead” in pencils is a graphite composition with Young’s modulus of approximately 1.0×109 N/m2. Calculate the change in length of the lead in an automatic pencil if you tap it straight into the... more
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Physics

05/09/22

Rotational Motion problem
A kid pushes a stationarymerry-go-round, creating anacceleration of 0.135 rad/s^2.How much time does it take the merry-go-round to complete2.00 rotations?can someone please answer this thourgly?
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05/09/22

VALUE OF RESISTOR
A resistor R in series with an 8 ohms resistor is connected across a 60 V voltage source delivering 2.5 A of current. What is the value of resistor R ?
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