When I calculating resultant force in equilateral triangle why there is square root vector formula we will put?

When I calculating resultant force in equilateral triangle why there is square root vector formula we will put?

A proton of energy 8ev moving circular path in uniform magnetic field.the energy of an Alfa particle moving in same mag field and along same path will be?

A convex mirror and a concave mirror each of focal length 10cm are placed coaxially. They are separated by 40cm and their reflecting surface face each other. A point object is kept on the principle...

Band gap of si,Ge,C. Give reason how carbon have large value?

Question: A landscape architect is planning an artificial waterfall in a city park. Water flowing at 1.75 m/s will leave the end of a horizontal channel at the top of a vertical wall h = 3.35...

Physics question

Explain in one sentence how the best-fit line could be used to find g, the gravitational field strength of Earth.

Sir/madam as F=GMM/R2 and by Kepler's third law it is T2 proportion to R3 HENCE can I say F=GMMK/T4\3 where K is arbitrary constant after removing proportionality sign ?

A car accelerates uniformly from rest at 12.5 m/s^2 for 10 seconds. It then brakes to a rest over a distance of 1000 meters.

Describe the expected motion in each case if the block of mass M and coefficient of friction is started with an initial velocity of V towards the pulley. Assume that the inclined plane is at a 0 degree...

I did a coefficient of sliding friction lab where you have an incline plane , wooden block and a mass hanger. The objective was to add mass to the hanger until the block moved down the plane at different...

A train starting from rest from a platform passes a pole the front part of the train crosses the pole with a velocity u and the real part of the train cross the pole with a velocity v. What is the...

What is the height of the monument in meters?

You wish to push a box up a curved ramp. You exert a force parallel to the ramp with magnitude Wsin(x/R), where W is the weight of the box and R is the radius of curvature of the ramp. How much...

a pulley of negligible weight is suspended by a spring balance '8'. Masses of 3 kg and 7 kg respectively are attached to opposite ends of a string passing over a pulley 'P'. The spring balance reads'...

Can you leave proof of how you came up with the answer? I'd like to learn it better.

We have to find the range of crate

starting with the projectile motion equations , show that the launch speed of the projectile is given by the following equation : vi = sqrt (xf2 *g) /(2yi) The square root is over the entire...

The definition of unbalanced force and the example of this question

A 9m B 6m C 5m D 20m E 7m F 11m G 10m H 8m

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