12,723 Answered Questions for the topic physics

Physics

05/10/24

Electron problem-potential difference and kinetic energy
An electron with an initial speed of 5.50×105 m/s is brought to rest by an electric field.What was the potential difference that stopped the electron?What was the initial kinetic energy of the... more
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Physics

05/10/24

Resistance Question with Battery
A wire with resistance R is connected to the terminals of a 30 V battery. What is the potential difference Δ𝑉ends between the ends of the wire? What is the current I through the wire, if the wire... more
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Physics

05/10/24

Physics - Please Help with Question 2

Please Help with Question 2 and can you double check my work 1 a-e. didn’t quite understand this lesson so please help me draw the diagrams 🙏🙏 even if you just draw one and explain how to do it in... more
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Physics

05/10/24

Physics Mirror Worksheet Please Help me With Question 2

Please Help With Question 2, and could you also see if i did 1 a-e correctly, i can’t afford to fail this assignment 1. Find the distance to the image in the following curved mirror problems and... more
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Physics

05/09/24

HELP ALBERT PHYSICS 1 Energy of a Simple Harmonic Oscillator
You are given the task of designing a dart gun powered by an ideal spring. The mass, m𝑚, of the dart will be 0.030 kg. The gun barrel is to be 8.0 cm long. When fired horizontally, the dart is to... more
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Physics

05/08/24

Gas Pressure and PV diagram
A gas undergoes two processes. In the first the volume remains constant at 0.3m3 and the pressure decreases from 5.00 × 105 Pa to 1.00 × 105 Pa. The second process is an expansion to a volume of... more
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Physics

05/08/24

Specific heat capacity
A mass of water must evaporate from the skin of a 66.0 kg man to cool his body by 1.30°C. The heat of vaporization to water at body temperature (37°C) is 2.42×106J/Kg the specific heat capacity of... more
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Physics

05/08/24

Centripetal acceleration and angular velocity
Riders in an amusement park ride shaped like a Viking ship hung from a large pivot that is rotated back and forth like a rigid pendulum. Sometime near the middle of the ride, the ship is near... more
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Physics

05/08/24

A sinusoidal wave on a string
A sinusoidal wave on a string travelling in the -x direction has an amplitude of 1cm, wavelength 3cm and frequency 245 Hz. At t=0, the particle of string at x=0 is displaced by the distance... more
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Physics

05/08/24

240 grams of cold water are heated up in a microwave with a power output of 1,000 watts. It takes the glass exactly 16 minutes to turn all of that water into steam.

a) Find the amount of energy involved in this entire process, in J. b) Find the amount of energy involved only in evaporating the water when it is at 100 °C, in J. c) Find the amount of energy... more
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Physics

05/08/24

Volume and density of an object
An ore sample weighs 17.5N in air. When the sample is suspended by a light cord and totally immersed in water, the tension in the cord is 11.2N. How do I find the total volume and the density of... more
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Physics

05/08/24

Need help to solve these problems
A 5 kg block of lead (c = 128 J/(kg °C)) is at rest on a spring with a constant of 150 N/m. A 2 kg block of lead is thrown on top of the 5 kg block from a height of 2.40m above the block and an... more
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Physics

05/08/24

Need help find the centripetal forces

A banked curve makes it safer to drive on curved roads even if it seems more dangerous. The following is a 1200kg car on a banked curve at 20 degrees from the horizontal. However, the car is... more
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Physics

05/08/24

Do solid structures or objects vibrate or just the particles that make up the solids/structures?
Solid objects do not vibrate. (That we can see and/or feel and/or hear.) However, molecules inside a solid vibrate. Does this mean the solid structure or object itself vibrates or just the... more
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Physics

05/07/24

Angular velocity
During a very quick stop a car decelerates at 10 m/s2 before coming to stop. If the tires have a 0.45m radius and assuming they do not slip on the pavement: how many revolutions do the tyres make... more
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Physics

05/07/24

pls help with this electrostatics frq for ap physics 2🙏
Two small conducting spheres attached to very thin silk filaments hang from a very large metal beam. The silk attached to sphere 1 is dry and therefore nonconducting, while the silk attached to... more
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Physics

05/07/24

pls help with this optics frq for ap physics 2🙏
The figure above represents a glass lens that has one flat surface and one curved surface. After incoming parallel rays pass through the lens, the rays pass through a focal point. The focal length... more
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Physics

05/07/24

If there was a cake weight 9N what will it's normal force be

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Physics

05/06/24

If atoms and molecules that make up a solid vibrate, why does the solid not vibrate? What causes the solid object to not vibrate?
Atoms and molecules that make up a solid vibrate. However, do the vibrations cancel each other out and that is why the solid object itself doesn’t vibrate?
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Physics

05/06/24

Ray tracing to determine location of image? What is this and how do I do it?
An object is 6.0 cm in front of a converging lens with a focal length of 10 cm .Use ray tracing to determine the location of the image.
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Physics

05/06/24

Image height and position with a diverging lens.

A 4.0-cm-tall object is 17 cm in front of a diverging lens that has a -30 cm focal length.Calculate the image position.Calculate the image height.
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Physics

05/06/24

Calculating image position and image height
A 4.0-cm-tall object is 80 cm in front of a converging lens that has a 40 cm focal length.Calculate the image position.Calculate the image height.
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Physics

05/06/24

Imagine Distance Problem-confused please help walk me through.

A diverging lens with focal length 9.00 cmcm is 18.0 cmcm from an object. What is the image distance s′𝑠′?
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Physics

05/03/24

If atoms and molecules that make up a solid vibrate, why does the solid not vibrate? What causes the solid object to not vibrate?
Atoms and molecules that make up a solid vibrate. However, do the vibrations cancel each other out and that is why the solid object doesn’t vibrate?
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Physics

05/03/24

physics of matter
An empty storage tank has a volume of 1,190 ft3. What is the buoyant force exerted on it by the air? (Assume the air is at 0°C and 1 atm.)
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