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07/11/20

A blue ball is thrown upward with an initial speed of 23.5 m/s, from a height of 0.7 meters above the ground. 2.9 seconds

A blue ball is thrown upward with an initial speed of 23.5 m/s, from a height of 0.7 meters above the ground. 2.9 seconds after the blue ball is thrown, a red ball is thrown down with an initial... more

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Physics C Math Calculus Physics

07/11/20

A tortoise and hare start from rest and have a race. As the race begins, both accelerate forward. The hare accelerates uniformly at a rate of 0.9 m/s2 for 4.5 seconds.

A tortoise and hare start from rest and have a race. As the race begins, both accelerate forward. The hare accelerates uniformly at a rate of 0.9 m/s2 for 4.5 seconds. It then continues at a... more

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Physics C

07/03/20

Physics Calculations

Each side of a square is increasing at a rate of 8 cm/s. At what rate is the area of the square increasing when the area of the square is 25 cm2?A plane flying horizontally at an altitude of 1 mi... more

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Physics C Physics Physics B

06/26/20

hello to all the best tutors here !

I have recently a problem with one of the fundamental of physics book which is chapter 31 and i cant really solve the problems specially the RLC circuits , is there anything i can do for... more

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Physics C Physics Physics B

06/21/20

please explain the answer

A uniform magnetic field is in the positive z direction. A positively charged particle ismoving in the positive x direction through the field. The net force on the particle can be madezero by... more

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Physics C

06/16/20

Astrophysics and astronomy equations

Star A and star B are both on the main sequence. Star A is 56 times more luminous than star B. What is the ratio of their main-sequence lifetimes? Refer to the stellar life expectancies equation

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Physics C Physics Physics B

06/04/20

please answer this :

A parallel-plate capacitor has a plate area of 0.3 m2 and a plate separation of 0.1 mm. If thecharge on each plate has a magnitude of 5  10^–6 C then the force exerted by one plate on theother has... more

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Physics C Physics Physics B

06/04/20

please answer this :

Eight identical spherical raindrops are each at a potential V, relative to the potential faraway. They coalesce to make one spherical raindrop whose potential is:A) V/8B) V/2C) 2VD) 4VE) 8V

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Physics C Physics Physics B

06/04/20

please answer this :

Positive charge Q is placed on a conducting spherical shell with inner radius R1 and outerradius R2. A point charge q is placed at the center of the cavity. The magnitude of the electricfield... more

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Physics C Physics Physics B

06/04/20

please answer this :

A conducting sphere of radius 0.01 m has a charge of 1.0  10^–9 C deposited on it. Themagnitude of the electric field in N/C just outside the surface of the sphere is:A) zeroB) 450C) 900D) 4500E)... more

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Physics C Physics Physics B

06/04/20

please explain:

A charged particle is placed in an electric field that varies with location. No force isexerted on this charge:A) at locations where the electric field is zeroB) at locations where the electric... more

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Physics C

06/01/20

What is the vertical component of the projectile’s initial velocity?

The straight-line distance d and angle φ with respect to the horizontal are known for a target. A projectile is fired at some unknown angle θ such that it reaches the target at the top of its... more

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Physics C Physics Physics B

05/30/20

please answer this :

A galvanometer has an internal resistance of 12  and requires 0.01 A for full scaledeflection. To convert it to a voltmeter reading 3 V full scale, one must use a series resistance of:A) 102 B)... more

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Physics C Physics Physics B

05/30/20

please answer this :

A certain ammeter has an internal resistance of 1  and a range from 0 to 50 mA. To makeits range from 0 to 5 A, use:A) a series resistance of 99 B) an extremely large (say 106 ) series... more

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Physics C Physics Physics B

05/30/20

please answer this :

A charged capacitor is being discharged through a resistor. At the end of one time constantthe charge has been reduced by (1 – 1/e) = 63% of its initial value. At the end of two timeconstants the... more

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Physics C Physics Physics B

05/30/20

please answer this :

A certain capacitor, in series with a resistor, is being charged. At the end of 10 ms its chargeis half the final value. The time constant for the process is about:A) 0.43 msB) 2.3 msC) 6.9 msD) 10... more

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Physics C Physics Physics B

05/30/20

please answer this

55. To make a galvanometer into an ammeter, connect:A) a high resistance in parallelB) a high resistance in seriesC) a low resistance in seriesD) a low resistance in parallelE) a source of emf in... more

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Physics C Physics Physics B

05/30/20

please answer this

Two identical batteries, each with an emf of 18 V and an internal resistance of 1 , arewired in parallel by connecting their positive terminals together and connecting their negativeterminals... more

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Physics C Physics Physics B

05/23/20

capacitance series with battery

When a dielectric slab is insertedbetween the plates of one of the twoidentical capacitors which are series and connected to a battery, do thefollowing properties of that capacitor... more

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Physics C Physics Physics B

05/23/20

capacitance series

Initially, a single capacitance C1 is wired to a battery. Then capacitanceC2 is added in series Are (a) the potential differenceacross C1 and (b) the charge q1 on C1 now more than, less than,... more

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Physics C Physics Physics B

05/12/20

please solve this:

we have a cylinder with radius a and length L and a conductivity of δ=δ"(r) find the resistivity of it please .

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Physics C Physics Physics B

05/07/20

Physics Systems

Hello, I have attempted this question multiple times but do not know how to answer it, please help me! Can anyone attempt part B please?A 6.5kg block is at rest on top of a desk. it is connected... more

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Physics C Physics

05/06/20

Introductory Physics - Systems

Hello, I have attempted this question multiple times but do not know how to answer it, please help me!A 6.5kg block is at rest on top of a desk. it is connected with a rope over a pulley an empty... more

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Physics C Physics Electrical Engineering Physics B

04/27/20

how to prove this question ?

we have two charged particles on an axis(-3q and -q ) however a third charged particle can be placed at a certain point between the particles. how to prove the equilibrium is stable or unstable ?

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Physics C Physics Physics B

04/21/20

Three beads are placed along a thin rod. The first bead, of mass m1 = 29 g, is placed a distance d1 = 1.1 cm from the left end of the rod.

The second bead, of mass m2 = 11 g, is placed a distance d2 = 1.8 cm to the right of the first bead. The third bead, of mass m3 = 43 g, is placed a distance d3 = 4.5 cm to the right of the second... more

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A blue ball is thrown upward with an initial speed of 23.5 m/s, from a height of 0.7 meters above the ground. 2.9 seconds

A tortoise and hare start from rest and have a race. As the race begins, both accelerate forward. The hare accelerates uniformly at a rate of 0.9 m/s2 for 4.5 seconds.

Physics Calculations

hello to all the best tutors here !

please explain the answer

Astrophysics and astronomy equations

please answer this :

please answer this :

please answer this :

please answer this :

please explain:

What is the vertical component of the projectile’s initial velocity?

please answer this :

please answer this :

please answer this :

please answer this :

please answer this

please answer this

capacitance series with battery

capacitance series

please solve this:

Physics Systems

Introductory Physics - Systems

how to prove this question ?

Three beads are placed along a thin rod. The first bead, of mass m1 = 29 g, is placed a distance d1 = 1.1 cm from the left end of the rod.

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