12,834 Answered Questions for the topic physics

Physics

06/11/22

A copper vat is 15 m long at room temperature (20°C). How much longer is it when it contains boiling water at 1 atm pressure?
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Physics

06/11/22

Newtons laws of motion
A cannon is fi red horizontally from a platform. The platform rests on a flat, icy, frictionless surface. Just after the shell is fired and while it is moving through the barrel of the gun, the... more
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Physics

06/10/22

An aluminum wing on a passenger jet is 27 m long when its temperature is 27°C. At what temperature would the wing be 7 cm (0.07 m) shorter
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Physics

06/10/22

If timmy is traveling 20 mph south for 2 hours. How far is he displaced

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Physics

06/10/22

A rectangular shop in the mall is 8 meters wide and 10 meters long. What is its area
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Physics

06/10/22

A rectangular shop in the mall is 8 meters wide and 10 meters long. What is its area
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Physics

06/10/22

A rectangular shop in the mall is 8 meters wide and 10 meters long. What is its area
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Physics

06/10/22

A rectangular shop in the mall is 8 meters wide and 10 meters long. What is its area
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Physics

06/10/22

A rectangular shop in the mall is 8 meters wide and 10 meters long. What is its area
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Expert Answers •1
Physics

06/10/22

A rectangular shop in the mall is 8 meters wide and 10 meters long. What is its area
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Physics Homeschool

06/10/22

Compute for the resistivity of the wire
1. The graph below shows the current vs. voltage characteristics (IV) graph of a filament lamp. At 4.0 V, the current of the filament lamp is?A. 8x10^-3 AB. 0.5x10^-3AC. 16x10^-3AD. Need more... more
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Physics Homeschool

06/10/22

Calculate for Electric Circuits
For items no. 17-21, refer to this figure.17. What is the equivalent resistance of the circuit?18. If the circuit is connected to a 12 V source, how much power is supplied to the circuit?19. How... more
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Physics Math Homeschool

06/10/22

Electric Circuits
1. Which of the following statements are true? (Select all applicable)a. High conductivity of a wire means that it is more capable for handling currentsb. High resistivity of a wire means that it... more
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06/10/22

What is the difference in voltage between the plates? Science
Two large parallel plates are 2.0 cm apart. The strength of the electric field between them is 100.0 N/C . What is the difference in voltage between the plates?(a) −2.0 V(b) +2.0 V(c) 0 V(d) +20 VI... more
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Physics Science Chemistry

06/10/22

Where is the image of the object? Science
An object is placed 4.0 cm to the left of a convex lens with a focal length of +8.0 cm . Where is the image of the object?(a) 8 cm to the left of the lens(b) 8 cm to the right of the lens(c) 12 cm... more
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Physics

06/09/22

Charges tend to move "downhill" in potential. "Yes" or "No".
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Physics Science

06/08/22

A 5cm pencil is placed at a distance of 20cm from a converging mirror with a focal length of 40cm. i) using formulas, calculate the distance to the image. ii) calculate the image height.

iii) find the magnification factor.
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Physics

06/05/22

A particle under double-exponential potential
A particle of mass m is constrained to move along the x-axis. It's potential energy is given by: U(x) = U0 [ e−2β(x−x0) − 2e−β(x−x0) ] where U0, β, and x0, are known parameters.a) Assume that the... more
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Physics

06/04/22

A particle under double-exponential potential
A particle of mass m is constrained to move along the x-axis. It's potential energy is given by: U(x) = U0 [ e−2β(x−x0) − 2e−β(x−x0) ] where U0, β, and x0, are known parameters.a) Assume that the... more
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Physics Mathematics

06/04/22

How to find the angle and resultant force of three forces for a particle in equilibrium?
A particle in equilibrium has three forces of magnitudes 5N, 6N and F N acting in it in the horizontal plane in the directions ( sorry it looks like I can’t attach a pic but the 5N is acting... more
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Physics

06/03/22

Pendulm Damping
A 93.0 cm pendulum is released from a small angle. After 103 oscillations the amplitude is one half of its original value. The damping is proportional to the speed of the pendulum bob.Find the... more
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Physics

06/03/22

Centripetal Acceleration

Tamir drives his car around a circular section of a road having a radius of 20 meters at a constantspeed of 10 m/s. What is the centripetal acceleration of Tamir's car?
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06/03/22

A hypothetical material has a relative permeability and relative permittivity of 3.0 and 4.0, respectively.

A hypothetical material has a relative permeability and relative permittivity of 3.0 and 4.0, respectively. a. What is the speed of light in this material? b. What is the value of the magnetic... more
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Physics

06/02/22

Physics... Electricity
A 4N force acts between two equal charge separated by a distance d.  What will be the new force if the magnitude of each of the two charges are doubled but the distance remains the... more
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Physics

06/01/22

A scale reads 380 N when a piece of nickel is hanging from it. What does it read (in N) when it is lowered so that the nickel is submerged in water?
A scale reads 380 N when a piece of nickel is hanging from it. What does it read (in N) when it is lowered so that the nickel is submerged in water?
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