371 Answered Questions for the topic physics B

Physics B Physics Physics C

03/20/19

2 part Physics question
You have a box of books on the floor with a total mass of 100-kg. You attach a rope to the box at an angle of 30 degrees above the horizontal. If the coefficient of kinetic friction is... more
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Physics B Physics Physics C

03/20/19

Physics acceleration question
A 10-kg brick is being pulled by a string that is horizontal. The coefficient of friction is .32 and the tension force is 50N. What will be the acceleration of the brick?
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Physics B Physics Physics C

03/20/19

Physics plane question
A plane is banking at an angle of 35 degrees to the horizon. The mass of the plane is 2000 kg. What is the speed of the plane if it is turning in a circle of 325 meters diameter?
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Physics B Physics Physics C

03/20/19

Physics Speed Question
A car is going over a rounded hill with a radius of 50 meters. At what speed would the car’s occupants weigh ½ of their regular weight?
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Physics B Physics Physics C

03/20/19

About Physics travelling
A hockey puck is traveling at 12.5 m/s on a floor. The coefficient of friction is 0.15 so how far will it travel before coming to a stop?
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Physics B Physics Physics C

03/20/19

Physics question
How fast would an airplane have to go to make a loop of 220 meters radius to keep from fallout out of the loop or taking negative G’s?
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Physics B Physics Physics C

03/20/19

Another Physics question about radius
How much would a 100-kg object weigh at one earth’s radius above the earth?
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Physics B Physics Physics C

03/20/19

Physics question for the radius
What is the radius of turn for an airplane that is traveling at 42 m/s with a 35-degree bank angle?
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11/03/18

A 2500 kg car is moving with a speed of 30 m/s. How much work is required to stop the car?
A 2500 kg car is moving with a speed of 30 m/s. How much work is required to stop the car?
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Physics B Physics

06/19/18

Physics Work Question
Ben carries a 200N suitcase up here flights of stairs (a height of 10m) and then pushes it with a horizontal force of 50N at a constant force of 0.5M/s for a horizontal distance of 35m. How much... more
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05/06/18

A large punch bowl holds 3.35 kg of lemonade (which is essentially water) at 20.0° C.
A 0.40-kg ice cube at−10.2°C is placed in the lemonade. What is the final temperature of the system, and the amount of ice (if any) remaining? Ignore any heat exchange with the bowl or the... more
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Physics B Physics Physics Math

05/06/18

How much heat must be removed
from 0.81 kg of water at 0 degrees Celsius to make ice cubes at 0 degrees Celsius.?
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05/02/18

A wheel of mass 10 kg and radius 2m rotates with angular velocity w= 2pi rad/s
a)If constant torque is applied to the wheel and it comes to rest in 2 seconds, what is the magnitude of the angular acceleration? b) Calculate the magnitude of the torque required to bring the... more
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05/02/18

A child of mass 20 kg sits at the edge of a merry-go-round of radius 2 m and mass 100 kg...
The merry go round spins freely (w/out friction) at 10 rpm. What is the total angular momentum of the system? Assume that the child is a point mass.
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Physics B

02/15/18

laplace of t2e-t cos at
find laplace transform of t2 e-t cos at
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Physics B Physics 2

11/10/17

ELECTROSCOPE QUESTION HELP!!!!!
A positively charged object is brought near but not in contact with the top of an uncharged gold leaf electroscope. The experimenter then briefly touches the electroscope with a finger. The finger... more
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10/23/17

What volume of iron (density 7.87 g/cm3) would be required to balance a 1.00 cm3 sample of lead (density 11.4 g/cm3) on a two-pan laboratory balance?
What volume of iron (density 7.87 g/cm3) would be required to balance a 1.00 cm3 sample of lead (density 11.4 g/cm3) on a two-pan laboratory balance?
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08/31/17

Gauss's Law: Find expression for the electric field
A slab of nonconductive material is perpendicular to the z-axis, centered on the origin, has a total thickness of 40 mm, and is infinite along the other two axes. It has a uniform volumetric charge... more
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08/28/17

Derive expression for speed
Derive a symbolic expression for the speed v at which a particle of charge -Q and mass m must move to hold itself in a circular orbit of radius r centered on a massless particle of charge 4Q that... more
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08/28/17

Find Electric Field along z-axis
An infinite number of identical charged rings of radius w and charge Q are arranged coaxially along the z- axis such that each adjacent pair is a distance w apart and one lies with the origin in... more
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08/28/17

Electric Fields
Find the electric field vector at the origin due to an infinitely long, straight line bearing a uniform linear charge density of 360 fC/m. The line charge is tilted at π/4 radians such that it runs... more
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Physics B Physics Ap Physics

07/06/17

Physics problem - pleaseeeee need help!
I'm editing this problem because I was able to get a couple of the answers, but I still need help on the rest. An electromagnatic wave is traveling in vacuum with frequency 7 x 1014 Hz. The wave... more
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03/17/17

Capacitors in Combination-Find Each Charge
C1 and C2 are capacitors in parallel. C3 is in series with C12. C1=16.6 microF, C2=8.2 microF, C3=0.3 microF. A 1.52 V battery is connected in this combination. Find the charge stored on each... more
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12/16/16

Final Angular Velocity. Need help w/ part 4
A phonograph turntable driven by an electric motor accelerates at a constant rate (i.e., constant angular acceleration) from 0 to 33.33 revolutions per minute in 2 minutes. The turntable is a... more
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09/13/16

Astrophysics question
Object A emits most strongly at 400 nm, while object B emits most strongly at 800 nm. What can we say about their relative temperatures? A’s temperature is the same as B’s.Nothing. Temperature is... more
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