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Yurem Pena
A 1.14x10^4 kg lunar landing craft is about to touch down on he surface of the moon, where the acceleration due to gravity is 1.6 m/s^2. At an altitude of 165m the craft's downward velocity is 18.0m/s. To slow down the craft, a retrorocket is firing to provide an upward thrust. Assuming the decent is vertical find the magnitude of the thrust needed to reduce the velocity to zero at the instant when the craft touches the lunar surface.
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Javon
What's an example sentence using thermal energy
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Derrick Lang
As air becomes warmer, how does the speed of sound in the air change
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Asia Fleming
Chromatic aberration is caused by:

A: imperfect shape of lens

B: uneven filtering of various colors

C: different refraction of the light spectrum

D: uneaven reflection of light colors
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Annalise
What is Albert Einstein's contribution to the understanding of nuclear energy?

A. He proposed that matter can be converted to energy and vice versa.

B. He first discovered that nuclear-reaction products are lighter than the reactants. C. He developed the use of nuclear reactions to generate electricity.

D. He demonstrated that a uranium nucleus splits and releases neutrons.
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Dayton Salazar
A horizontal force, F1 = 65 N, and a force, F2 = 12.4 N acting at an angle of θ to the horizontal, are applied to a block of mass m = 3.1 kg. The coefficient of kinetic friction between the block and the surface is μk = 0.2. The block is moving to the right.

Part (a) Solve numerically for the magnitude of the normal force, FN in Newtons, that acts on the block if θ = 30°. t Part (b) Solve numerically for the magnitude of acceleration of the block, a in m/s2, if θ = 30°.
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Reyna Hines
A centrifuge in a forensics laboratory rotates at an angular speed of 3,750 rev/min. When switched off, it rotates 52.0 times before coming to rest. Find the constant angular acceleration of the centrifuge (in rad/s2). Consider the direction of the initial angular velocity to be the positive direction, and include the appropriate sign in your result.
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Layne
How can a global dependence on fossil fuels have associated social costs?
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Dragster
When light travels from water to glass does it toward or away?
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Sanai Park
A sphere of radius 10.0cm is moulded into a uniform cylindrical wire of same radius r calculate length in millimeters
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Cooley
Explain the deeply rooted historical factors that moved america toward independence from britain.
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Yair Travis
When a mass m1is placed on top of a spring and allowed to come to rest, the spring iscompressed by an amount x1. How much would the spring compress if it is an elevatoraccelerating upwards at 3g and has a mass of 4m1placed on top of the spring?
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Hailee Hancock
Does gravity have an effect on on the potential difference of a battery
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Guest
If the density of iron is 7.87 g/cm3, what is the volume of the 12.00 g piece of iron? use proper significant figures.
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Luna Friedman
What are my favorite two sports
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