Q&A for How to Solve Any Physics Problem

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How can I pass physics in grade 10?

Community Answer

Keep trying and be thorough in learning the theories. Don't hesitate to ask any questions of your teacher if you don't understand something. Write notes and list down the formulas and stick them on your wall. Keep reviewing and things will fall into place easily.

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I struggle to remember physics formulas. Any tips?

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Write the formulas down over and over again while standing up. Studies show that doing so can improve your recall. Also, you could record yourself reading the formulas and play them on a loop while you sleep.

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What is the relationship between Kelvin and Celsius?

Community Answer

0 degree Celsius = 273 Kelvin. Therefore, 25 degree Celsius (25 + 273) = 298 Kelvin.

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What is angular velocity?

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It's the velocity of the object moving in a circular path. As it continuously changes its direction while moving in a circular path, it changes its angles - hence, angular velocity.

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A body is at rest, and gains a velocity of 10 ms-1 in 5 seconds. How do I find the acceleration and the distance covered by the body?

Community Answer

Find the acceleration by using v = u + at, with 0 m/s as the initial velocity (u) and 10 m/s as the final velocity (v), and 5 s as time. Substitute the known values to get the distance covered by the body (x) in the equation v² = u² + 2ax, or in the equation x = ut + 1/2 at².

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What is a ruby made of?

Community Answer

A ruby is a pink to blood-red colored gemstone, a variety of the mineral corundum (aluminium oxide). The red color is caused mainly by the presence of the element chromium. Its name comes from ruber, Latin for red. Other varieties of gem-quality corundum are called sapphires.

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What does analog in physics mean?

Community Answer

Analog in physics means that any parameters or values are represented in a mechanical way. Take for example the analog clock, whose hands move mechanically and continuously around the face.

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A ball hits a wall horizontally at 6m/s, it rebounds horizontally at 4.4 m/s, the ball is in contact with the wall for 0.04s, what is the acceleration?

Community Answer

u = 6m/s v= 4.4m/s t = 0.04sec. Using v= u+at i.e a = v - u / t now substitut values , a= 4.4-6/0.04 = -40m

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Help me solve this problem? "An electric circuit is shown in the figure. I is the current entering into the circuit at A. What is the potential difference between C & D and what is the resultant resistance between A & B?"

Community Answer

Potential difference can be found out by subtracting the value of given D from C.

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Why does gravity vary from place to place?

Community Answer

Because the gravitational field strength (acceleration due to gravity) is higher at sea level than on top of a mountain.

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A force of 16 N acts on an area of 0.16 m2. What is the magnitude of pressure in pascals?

Community Answer

Pressure=Force/Area. Here Force is 16 N and Area is 0.16 m2. Hence Pressure will be 16/0.16=100 pascals.

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How do I find the mass of an object?

Community Answer

wikiHow has a specific article on how to Calculate Mass .

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What is the heat capacity of 80.0 kg of silver?

Community Answer

Heat capacity is an intrinsic property of the material. So, it is the same value regardless of the mass, shape, or texture of the said material. For silver it is 0.233 J/g m K.

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What is displacement in physics?

Community Answer

The shortest distance between the final and the initial position is called displacement. It is a vector quantity, as it has both direction and magnitude.

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A vehicle accelerates from rest to 12 m/s in 5 seconds. How far does the vehicle travel?

Amei Jutt

Community Answer

V=12, T=5, V=D/T, 12=D/5, =>D=12*5, =>D=60 meters. With this, D represent the distance traveled by the vehicle at the rate of 12 meter/sec for 5 seconds traveling a total of 60 meters.

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How can I understand moment of force?

Community Answer

Force = mass × acceleration. So, the moment of force is the product of mass into the acceleration of 1ms^_2.

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How do I find the speed of a throw?

Community Answer

By determining the angle of throw, distance, time before landing, and using the formula.

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Why can't I solve problems during an exam?

Community Answer

You can't solve problems during an exam because you are panicking. You need to take a deep breath, calm down, and relax so that your brain can function well.

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What is the difference between displacement, velocity, acceleration, and speed?

Community Answer

Displacement is the smallest distance between two points. Velocity is the displacement per unit of time. Acceleration is the velocity per unit of time. Speed is the distance covered per unit of time.

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Question

What is weight of a body of mass 20kg at the equator?

Community Answer

The weight of the body will be given by W=mg Where W=weight m=mass g=gravity hence W=20kg*10N which will be equal to 200N. That will be the weight of the body at equator since gravity won't change on Earth unless you travel outside earth.

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Question

How do I label velocities?

Community Answer

Label them as V and write the number or an alphabet beside it based on the velocity. for example, initial velocity is given as 20 m/s and final velocity is given as 40 m/s. write like Vi=20 m/s and Vf = 40 m/s or V1= 20 m/s or V2 = 40 m/s. We do this for our understanding, but you can write in any way you want. The above one is the most common method.

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Question

How do I approach problems on frictional force?

Ayush Abhilash

Community Answer

Since frictional force is negative, you have to take it as negative even if the value is not given and the force applied by the object must be taken as positive. use F= ma and equations of motion to find out the variables.

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A silk rubbed on a hair several times acquires a net charge of - 0. 25 C. Did the silk gain or lose electron? How many electrons were transferred?

Ayush Abhilash

Community Answer

The silk rod gained electrons. Use the formula Q= ne . where e is the charge on one electron that is -1.6*10^-19 and Q is given as -0.25 C. substituting these values we get n= 15.7*10^17( approx) that is the number of electrons. Always remember if there is negative charge it gained electrons and if there is positive charge it lost electrons.

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Question

What is an easy way to avoid calculation mistakes in Physics numericals?

Donagan

Top Answerer

Use a calculator and double- or triple-check your work.

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What do I do if I feel overwhelmed about physics problems?

Donagan

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Ask for help from a teacher, a tutor or a friend.

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