Physics, 15.10.2019 10:30, bambamshortymacc

What are the scientific tools used to measure mass, volume, temperature, and length?

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Physics, 22.06.2019 00:00, vkyles84

True or false: the revolution of the earth creates day and night as it rotates around the sun

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Physics, 22.06.2019 01:30, kaylin28

Astone is dropped with no initial velocity from the top of a cliff and hits the ground a time of 3.9 s later. what is the height of the cliff, in units of meters? you may assume that air resistance is negligible. give the answer as a positive number question 15 a figure skater is rotating at a rate of 200 revolutions per minute. what is the angular speed, in units of rad/s? 200 o 20.9 12000 o 3.33

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Physics, 22.06.2019 13:30, kuddlebugsmommy

The two stars in a certain binary star system move in circular orbits. the first star, alpha, has an orbital speed of 36 km/s. the second star, beta, has an orbital speed of 12 km/s. the orbital period is 137 d. a) what is the mass of the star alpha? b) what is the mass of the star beta?

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Physics, 22.06.2019 22:30, nickocasamplonp6mlob

The drag force, fd, imposed by the surrounding air on a vehicle moving with velocity v is given by fd = cdaρv 2/2 where cd is a constant called the drag coefficient, a is the projected frontal area of the vehicle, and ρ is the air density. an automobile is moving at v = 80 kilometers per hour with cd = 0.28, a = 2.3 m2, and ρ = 1.2 kg/m3.