A certain hand crank generates power at 75 W how long will it need to run to fully charge a battery which holds a total energy of 3000 J

Q: A proton has a kinetic energy of K0 when an external force reduced its speed to half. How much work…

A: Let, initially the speed of the proton is v. An external force F acts on it changes its speed to…

Q: Two capacitors give an equivalent capacitance of 10.97 pF when connected in parallel and an…

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Q: 4₁ = ? R1 V₁ = ? = v= 12.0 V (a) Calculate P3 (in W). x W 1.50 Ω R2 = 8.00 0. 1₂ = ? R3 = 12.40 V3 =…

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Q: In a typical mammalian cell, the net transport by the sodiumpotassium exchange pump that maintains…

A: Work done per second

Q: The average television set is said to be on 6 hours a day.   a) Calculate the yearly cost (total…

A: Given: Average time Television is ON = 6 h/day            Average power consumption = 130 W/TV…

Q: A lightning storm approaches an area of 2(10)° m2 where the electric potential from the cloud to the…

A: Given,  area = 2 × 106 m2 Potential difference,  V = 3× 107 V Total charge,  C = 18 C Distance,  d =…

Q: What is the yearly cost, in dollars, of operating such a clock if the cost of electricity is $0.125…

A: Power of clock (P) = 3.1 W cost of electricity = $0.125 per kWh

Q: If the potential difference is needed to stop an electron is -0.349 V, what was the initial speed of…

A: Given data The potential difference is given as V = - 0.349 V.   Balancing the potential energy and…

Q: Four students run up the stairs in the times shown. Rank in order, from largest to smallest, their…

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Q: 27. How much power is required to do 18O J of work in 2.4 s?* O 432 J O 432 W O 75 J O 75 W

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Q: If R = 3.0 kN, C = 5.0 mF, ɛ = 6.0 V, Q = 15 mC, and /= 4.0 mA, what is the potential difference V,…

A: Given The resistance of the resistor is R=3 kΩ=3×103 Ω. The capacitance of capacitor is C=5…

Q: a two storey house in Portland, ME with dimensions 8.5m by12.0m with a height of 7.0m is heated…

A: Given: Cost of 1 kWh is = 0.11 INR. Consumption by room in one hour = 1000 W. length of room (l) =…

Q: 10. A 100 MW expressed in powers of 10 is given by: * O 1.0 x 106 W 1.0 x 107 W 1.0 x 108 W 1.0 x…

A: The power in megawatts is given as,

Q: Under certain circumstances, potassium ions (K*) in a cell will move across the cell membrane from…

A: Given, Potassium ions K+ Charge of potassium ions = 1.6×10-19 C Inside potential = -65.5 mV  Outside…

Q: A certain handcrank generates power at 75W. How long will it need to be run to fully charge a…

A: Power: The energy per unit time is known as power. Power = Energy/time

Q: 13 2 13 N Case a +6 A- 13 N 13 N Case b Pa Find the ratio of dissipated powers, P 1. = 8 P1 2. P 3.…

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Q: In a linear particle accelerator electrons are accelerated from rest to a speed of approximately the…

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Q: En la figura & = 12V, R = 62 R2 = 122 Ra = 4 요 R4 = 3 요 R5 = 5 2 %3D ¿Cuál es la diferencia de…

A: Given  R1 = 6 ohm R2 = 12 ohm R3= 4 ohm R4= 3 ohm R5= 5 ohm

Q: 87. Electric energy units are often expressed in "kilowatt-hours." (a) Show that one kilowatt-hour…

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Q: How many joules are in 1 kWh (kilowatthour)?

A: Given that1 kWh(kilowatt hour)To determine that How many joules are in 1 kWh?

Q: So I'm having a hard time in calculating the power at t=9s

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Q: An object is placed to a shelf from the ground which is 1.8 m higher. find out how much work is done…

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Q: An automatic external defibrillator (AED)delivers 135 J of energy at a voltage of 725 V. What is the…

A: Write the variable with the given values.

Instantaneous Power

Power is defined in physics as the amount of energy transmitted or transformed per unit time. The watt is the unit of electricity in the International System of Units, equivalent to one joule per second.