A rock is dropped from a height h above the ground. It falls and hits the ground with a speed of 11m/s. From what height should the rock be dropped so that its speed on hitting the ground is 22m/s? Neglect air resistance.

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Q: 9. If you wish to reduce the value of the equivalent resistance, given the individual resistances yo...

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Q: A 2.3-µF capacitor is charged through a 45-kΩ resistor. How long (in seconds) does it take for the c...

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Q: Consider the RLC series circuit with a peak voltage of 40 V, f = 60 Hz, R = 10 Q, L = 1.2 mH, C = 30...

A: Peak voltage = 40 V R = 10 ohm L = 1.2 mH C = 300 μF   

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A: Given : Direction of magnetic moment = +x axis Direction of magnetic field = +z

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Q: An infinite wire, positioned along the z axis of ?3, is electrically charged. The electric field ...

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Q: A loaded lory has a total weight of 12000 kg. Its 6 tyres are identical and show an air pressure of ...

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Q: A thermodynamic system is taken from an original state D to an intermediate state E by'the linear pr...

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A: In polar coordinates position is the function of ( displacement , angle)  Velocity is the rate of ch...

Q: 4. When the momentum of an object doubles and its mass is constant, its kinetic energy is: a. is hal...

A: As per question, Mass(m)  is constant  Momentum is doubled while mass remains constant  We have to f...

Q: Two boats are anchored in the harbor, separated by a horizontal distance of 14 m. The boats bob up a...

A: Given:Two boats between horizontal distance is 14 mEach boat making  5 complete cycle in every 15 se...

Q: 1. A suspension bridge oscillates with an effective force constant of 1:10° m (a) How much energy is...

A: Given  (1) (a)  Force constat (K) =(1) (108) N/m Amplitude (A1)=0.2m (b)  Energy transferred  E=8000...

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Q: A 748 g rubber ball was vertically pushed downward at 1.21 m/s from a height of 78.2 cm above a ceme...

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Q: A student adds two displacement vectors with magnitudes of 6.0 m and 8.0 m, respectively. Which one ...

A: Let the displacements be x and y x = 6.0 m y = 8.0m   The required value can be ranged from the maxi...

Q: 1. The eye of a hurricane passes over Grand Bahama Island in a direction 30.0° north of west with a ...

A: Please note : As per answering guidelines I can answer the first three parts of a multisub-part ques...

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Q: 2) A wire carries a 4.0-A current along the +x-axis through a magnetic field B = (5.0 î+ 7.0 j) If t...

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Q: -) Explain, in detail, what is occurring during the negative and positive work and power phases f th...

A: We have to find the negative and positive work.

Q: A hunter aims directly at a target (on the same level) 85.0 m away. (1) If the bullet leaves the gun...

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Q: An escalator is 30.0 meters long and slants at 30.0° relative to the horizontal.  If it moves at 1.0...

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Q: An object rotates through 5.2 radians in 4.6 seconds as it accelerates uniformly from rest. What is ...

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Q: LET IN THE REGION ospsI0,-T<<T, ALL 2, AND Pu=0 ELSEWHERE. DETE RMINE THE TOTAL CHARGE.

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Q: 6 An ionized helium nucleus (charge of +2e) E OT pointing north. What magnetic force (magr ence if i...

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Q: What is the capacitive reactance in Ohms?

A: Given: The peak voltage: V = 40 V. The frequency: f =60 Hz. The resistance: R = 10 Ω. The inductanc...

Q: distance of 50 cm. The force constant of the spring is A block of 200 g mass is dropped from a heig!...

A: The spring constant is the force applied if the displacement in the spring is unity. Here, we calcul...

Q: A point charge q= 3.95 nC is placed at the origin, and a second point charge q2 = -2.95 nC is placed...

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Q: A d.c. supply of 120V is connected to a large resistance X. A voltmeter of resistance 10kohms placed...

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Q: A 8.3 -coulomb charge is located 1.5 meters from a 3.7 -coulomb charge. Find the magnitude the elect...

A: According to coulombs law in electrostatics Electric force between two charges is  F = kq1q2/r2.. Wh...

Q: An infinitely long insulating cylinder of radius R=1.2m has a volume charge density that varies with...

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Q: Given the circuit below: R1 = 100 2 R2 = 200 2 %3D E R5 = 300 2 R3 = 1002 R4 = 150 2 %3D R6 = 1002 %...

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Q: An automotive test driver travels due north in a prototype hybrid vehicle at 30 mi/h for 2 hours.  S...

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Q: Consider the 100-MHz radio waves used in an MRI device. Part (a) What is the wavelength, in mete...

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Q: Given the circuit below: R1 = 100 2 R2 = 200 2 E R5 = 300 2 R3 = 1002 R4 = 150 2 R6 = 1002 %3D

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Q: What does a battery do?

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Q: у (ст) 1.0- 0.02 0.03 0.5+ 0.01 t (s) -0.5 0.04 0.05 -1.07 6. One end of a string is fixed in place ...

A: Given data:  Speed of the wave (v) = 12 m/s From the graph, Period (T) = 0.025 s Required: The wavel...