Physics, 21.05.2021 20:20 choiboiqg5755
A ball is initially thrown downwards with an initial speed of 20 m/s from the top of a 300 m tall building. The ball has a constant downward acceleration of 10 m/s ^ 2 a). What is the velocity of the ball immediately before it hits the ground at the base of the building?
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Physics, 22.06.2019 07:30
Identify the theory that can be used to explain each phenomenon. answers diffraction: wave theory interference: wave theory reflection: both particle and wave theories refraction: both particle and wave theories
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Physics, 22.06.2019 23:30
Sound travels slower in colder air that it does in warmer air. make a claim about the effect of air temperature on the speed of sound. support your claim with evidence
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Physics, 23.06.2019 01:00
Is the portion of the electromagnetic spectrum that has a frequency just above that of visible light.
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Apoint charge +q is at the origin. a spherical gaussian surface centered at the origin encloses +q. so does a cubical surface centered at the origin and with edges parallel to the axes. select "true" or "false" for each statement below. the electric flux through the spherical surface is greater than that through the cubical surface. suppose (for this statement only), that q is moved from the origin but is still within both the surfaces. the flux through both surfaces remains unchanged. the area vector and the e-field vector point in the same direction for all points on the spherical surface. the e-field at all points on the spherical surface is equal due to spherical symmetry. the flux through the spherical gaussian surface is independent of its radius.
Answers: 3
A ball is initially thrown downwards with an initial speed of 20 m/s from the top of a 300 m tall bu...
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