12,723 Answered Questions for the topic physics

Physics

03/23/24

Physics 20: Newtons 1st and 2nd Laws + Weight-mass
A 70k swimmer falls off a 10m high diving tower. Determine the net force exerted by the water, if the water bringes the swimmer to a stop at 2.0s.
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Physics

03/22/24

A bead with a hole through it slides on a wire track.
A bead with a hole through it slides on a wire track. The wire is threaded through the hole in the bead, and the bead slides without friction around a loop-the-loop (see figure below). The bead is... more
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Physics

03/22/24

Do solids vibrate?

Does a solid object without an external force applied to it, vibrate? So, it is known that atoms and molecules vibrate in a fixed position in a solid. Does the vibration of those molecules and... more
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Physics

03/20/24

Solid objects do not actually vibrate, correct?
The solid object as a whole does not vibrate because the molecules and atoms that vibrate are fixed in their position in the object, correct?
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Physics

03/20/24

Physics question
a 2.25-kg block is released from rest on a ramp of height h. When the block is released, it slides without friction to the bottom of the ramp, and then continues across a surface that is... more
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Physics

03/19/24

What force is required to stretch it by this amount? Answer in units of N.
A load of 35 N attached to a spring hanging vertically stretches the spring 3.5 cm. The spring is now placed horizontally on a table and stretched 11 cm. What force is required to stretch it by... more
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Physics

03/19/24

Find the spring constant k if the spring is stretched a distance 67 m by a suspended weight of 76 N. The acceleration of gravity is 9.8 m/s ^2 . Answer in units of N/m.
A common technique used to measure the force constant k of a spring is the following: Hang the spring vertically, then allow a mass m to stretch it a distance d from the equilibrium position under... more
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Physics

03/19/24

physics question
Use these numbers: the length of the bar is 40.0 cm; the battery voltage is 9.00 V; the resistance of the bar is 5.00 Ω, and the strength of the magnetic field is B = 0.300 T. Determine the... more
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03/17/24

Please help with this magnet physics problem
On the internet, I came across an interesting physics problem. Can you help with this:The weight of a small, flat refrigerator magnet is "M". We place the magnet on the refrigerator's vertical... more
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03/16/24

Please help with this magnet physics problem
On the internet, I came across an interesting physics problem. Can you help with this:The weight of a small, flat refrigerator magnet is "M". We place the magnet on the refrigerator's vertical... more
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03/14/24

Coaxial cable-physics problem
Please help with this problem.Problem:Power P is transmitted over a distance D on a coaxial cable. The radius of the cable's inner conductor with negligible resistance is Ri, and the radius of the... more
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Physics

03/13/24

Find the acceleration of the block of mass 1.00 kg shown in the figure below. The hanging weights are w 1 = 38.5 N and w 2 = 57.5 N. Find the acceleration of the block of mass 1.00 kg.
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Physics

03/12/24

Tension and Frequency Question-I am confused please walk me through the problem.
A piano tuner stretches a steel piano wire with a tension of 765 N. The steel wire has a length of 0.700 m and a mass of 5.25 g. What is the frequency of the string's fundamental mode of... more
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03/11/24

Find the volume of the solid obtained by rotating the region enclosed by...
Here's the link to the question. Can you please show me how to solve it and what is the answer? https://ibb.co/hMMfpP6
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Physics

03/11/24

Answer all ten questions in the description clearly. It is essential to include units in your answers, numerical value with the corresponding units.
1.    Calculate the momentum of a 265 kg motorcycle traveling at 25 m/s. Physics-Problem Solving EntriesKey Idea                                          Stock of Data SolutionSanity Check2.    A... more
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Physics

03/11/24

An aluminum wing on a passenger jet is 32 m long when its temperature is 27°C. At what temperature would the wing be 2 cm (0.02 m) shorter?
An aluminum wing on a passenger jet is 32 m long when its temperature is 27°C. At what temperature would the wing be 2 cm (0.02 m) shorter?
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Physics

03/07/24

Please Solve This Physics Question
What is the resistance (in Ω) of a 17.0 m long piece of 29 gauge copper wire having a 0.286 mm diameter?
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Physics

03/07/24

A mass is attached to the end of a spring...

A mass is attached to the end of a spring. It is pulled down by a few cm and released. Within the next 0.4 seconds it passes through its rest position 4 times. what is the period of the oscillation?
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Physics

03/06/24

Solid objects do not actually vibrate, correct?
I know atoms and molecules that make up a solid vibrate, but does the solid object itself actually vibrate?
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Physics

03/06/24

Positive Physics - HELP!!!!
A mixture of 3.31 mol of nitrogen and 4.59 mol of fluorine is in a container. The nitrogen has a partial pressure of 0.737atm. What are the moles of gas? mole fraction of mixture and partial... more
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Physics

03/05/24

Forces: incline+static friction
The figure below shows a 20-kg block on a fixed incline that makes a fixed angle of 60with the ground. A constant wind force F is blowing up, and along the incline, as indicatedin the figure.The... more
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Physics

03/05/24

Electrical Energy and Voltage
Two parallel plates are separated by a distance of 12.3 mm are connected to a 9 volt battery. A proton is emitted from positive plate with an initial speed of 1.62 × 10^4 m/s.I need A and E... more
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Physics

03/04/24

Maximum Speed and Acceleration of Bird-please help!
The motion of a nightingale's wingtips can be modeled as simple harmonic motion. In one study, the tips of a bird's wings were found to move up and down with an amplitude of 8.0 cm and a period... more
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Physics

03/04/24

Rope swing physics problem-please help explain.
You and your friends find a rope that hangs down 19 m from a high tree branch right at the edge of a river. You find that you can run, grab the rope, swing out over the river, and drop into the... more
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Physics

03/04/24

Confused physics question-please help
On your first trip to Planet X you happen to take along a 150 g mass, a 40-cmcm-long spring, a meter stick, and a stopwatch. You're curious about the acceleration due to gravity on Planet X, where... more
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