A pump lifts 21.0 kg of water per minute through a height of 3.50 m. What minimum output rating (watts) must the pump motor have?

Q: Archaeologists used pieces of burned wood, or charcoal, found at the site to date prehistoric…

A: Half life of Carbon -14 is (H) = 5730 years. It is given that 90% of C-14 had decayed = 1-0.90=0.10…

Q: A particle has a known (at rest) decay time of T = 10 seconds*. What would be the decay time (in…

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Q: 2000 A television camera at ground level is 2000 feet away from the launching pad of a space rocket…

A: Answer..

Q: Exercise 4 For an NaCl ion pair, attractive and repulsive energies E, and ER, respectively, depend…

A: Given,For an Na+-Cl- ion pair, attractive and repulsive energies EA and ER, respectivelyEA…

Q: Average Speed * You drive from Los Angeles to Portland, a distance of 1.59 x 10³ km, in 29.5 h,…

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Q: 6) Suppose you drink a liquid through a straw. Explain why the liquid moves upward, against gravity,…

A: The given problem can be explained by the atmospheric pressure.

Q: Consider three resistors with values of 2.0 k, 3.0 k2, 4.0 kN and a 12 Volt battery. a. What is the…

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Q: Three people pull simultaneously on a stubborn donkey. Jack pulls directly ahead of the donkey with…

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Q: An object's position in the x-direction as a function of time is given by the expression; x(t)- 5t²…

A: Given data:  The position function of the object x = 5t2 + 2t Required: The average velocity between…

Q: (a) What are the conditions for a particle to perform uniform circular motion about a fixed point?…

A: Uniform circular motion are often described because the motion of an object during a circle at a…

Q: l par

A: Given: Distance is 0.58 nm Electric field is 2.8×104N/C

Q: A 12 µC charge is placed at the center of a hollow conducting sphere that contains 6.0 µC of charge.

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Q: Q6. A ball A of mass 0.2 kg is moving on a frictionless surface with a speed of 3 m/s towards a ball…

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Q: Part 1) Seb lowers a box (initially at rest) from a height h, placing it on the ground. Which (if…

A: Answer :-  If air Resistance were taken into consideration the path that the box takes from height h…

Q: An ideal pendulum of mass m and length l starts at rest parallel to the ground. (a) Find the angular…

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Q: 1. Figure P19.30 shows the electric field lines for two charged particles separated by a small…

A: The number of electric field lines originating from q2 is The number of electric field lines…

Q: 6. How do noise cancelling headphones work, in principle? Explain briefly.

A: According to the principle of superposition of waves when two waves of the same frequency are out of…

Q: A cosmic ray proton moving toward the Earth at 5.00x10' m/s experiences a magnetic force of…

A: 2. Given: The velocity is v=5X107 m/s. The magnetic force is F=1.7X10-16 N. The angle is θ=45°.…

Q: A farmer builds three sections of a fence, as shown in the figure, where L = 20.00 m, and gets…

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Q: Find the scalar projection of b = -2i+ 8j + k onto a = -2i+ 7j + 8k. Enter your answer as an exact…

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Q: 7. You drop a rock into a lake, creating circular water waves that propagate outward from the impact…

A: Find a location and time of drop, where you can drop the second rock to completely cancel out the…

Q: (a) Find the speed of the cab just before it hits the spring. 9.39 m/s

A: