12,815 Answered Questions for the topic physics

05/19/22

Quadrilateral Circle Problems
A sector of a circle is radius 7 cm has an area of 7π / 2 cm^2. Find the central angle of the sector. Consider a circle of area 81 π cm^2. a.) Find the radius of the circle ... more
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Physics Science

05/19/22

A 9.5-L sample of helium gas stored at 25.0 C and 3.0 atm pressure is transferred to a 3.0 L tank and maintaned at s pressure of 5.0 atm
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05/18/22

contraction of a star

When a star of mass M is devoid of a nuclear energy source it will keep the same luminosity L for quite a while by consuming its gravitational energy through contraction. Assume the star can remain... more
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Physics

05/18/22

Equilibrium/physics

A 10.5 kg board 6.00 m long issupported by two sawhorses, oneat each end. A 4.45 kg saw sits onThe board 1.80 m from the left end.Find the upward force that theLEFT sawhorse exerts on theBoard.Can... more
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Physics

05/18/22

Torque /physics related
A see-saw is balanced on itsmidpoint A 22.4 kg kid sits on theleft ,1.75 m from the axis. Asecond kid sits on the other side.1.22 m from the axis. What is themass of the second kid?Can someone... more
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Physics

05/18/22

escape velocity
The escape velocity of a bullet from the surface of planet Y is 1951.0 m/s. Calculate the escape velocity from the surface of the planet X if the mass of planet X is 1.35 times that of Y, and its... more
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Physics

05/18/22

Torque /physics question

A see-saw is balanced on itsmidpoint A224 kg kid sits on theleft 1.75 m from the axis. Asecond kid sits on the other side.1.22 m from the axis. What is the mass of the second kid?Can someone answer... more
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Physics

05/17/22

Torque /physics based problem
A girl pushes a door with a 10.4 Nforce, perpendicular to the door,1.25 m from the hinges. Howmuch torque is produced?(Unit = N*m)can someone please throughly answer this ?
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Physics

05/17/22

Torque/physics based question

A girl pushes a door with a 10.4 Nforce, perpendicular to the door,1.25 m from the hinges. Howmuch torque is produced?(Unit = N*m) can someone please throughly answer this ?
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05/17/22

In a roundabout (or traffic circle), cars go around a 24- m -diameter circle.
In a roundabout (or traffic circle), cars go around a 24- m -diameter circle.If a car's tires will skid when the car experiences a centripetal acceleration greater than 0.60g , what is the maximum... more
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05/17/22

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 .
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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05/17/22

A skier is gliding along at 3.0 m/s on horizontal, frictionless snow. He suddenly starts down a 11 ∘ incline. His speed at the bottom is 15 m/s .
A skier is gliding along at 3.0 m/s on horizontal, frictionless snow. He suddenly starts down a 11 ∘ incline. His speed at the bottom is 15 m/s .What is the length of the incline?How long does it... more
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Physics

05/16/22

Consider a Porsche Cayman...
Consider a Porsche Cayman with a mass of 1,301 kg having a constant acceleration of 5.64 m/s2. What is the power, in hp, exerted by the engine of the car if the speed is 183 m/s?Answer: 1,799.98
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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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