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umka2103 [35]
3 years ago
5

What can scientists most accurately determine about a mass extinction q

Biology
1 answer:
arlik [135]3 years ago
4 0
Bsjjsjszzjsjkjdshhshvzvgzzggzgsgdgsgdgd
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(blank) is the thermal energy that flows from one substance to another when the substances differ in temperature.
ladessa [460]

The thermal energy can be defined as the type of kinetic energy which is generated due to the motions of the particles. This motion generates a temperature which can be measured easily. The type of thermal energy which flows from one substance to another when the temperature of the two substances is different is known as heat.

Hence, the blank can be filled with 'heat'.

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3 years ago
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Cuál es el mayor sello distintivo de la especie humana?
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What molecules make up proteins?
irga5000 [103]

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carbon hydrogen oxygen nitrogen

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In all organisms some of the energy that is taken in is____.
Maru [420]
Lost to the environment in the form of heat.
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3 years ago
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Unlike record players which rotate at a constant angular velocity, the CD-ROM driver in a CD player rotates the CD at different
zimovet [89]

Answer:

A. 21 rad/s

B. 200.5 rpm

C. 26.46 rad/s2

D. 0.299 Hz

Explanation:

Parameters given are:

Tangential velocity,v = 1.26m/s

Diameter (outer edge) = 0.120m

Outer edge radius, ro = 0.12/2

= 0.06m

A. Calculate Angular velocity

Angular velocity, w = v/r

= v/ro

= 1.26/0.06 = 21 rad/s

In rpm,

2pi/60 rad/s = 1 rpm

1 rad/s = 60/2pi rpm

Sp, 21 rad/s = 60 * 21/2pi rpm

= 200.5 rpm

B. Calculate the inner edge radius, ri given w = 500 rpm

Converting rpm to rad/s,

= 2pi/60 * 500 rad/s

= 52.34 rad/s

ri = v/w

= 1.26/ 52.36

= 0.024m

C. Calculating centripetal acceleration, a from the outer edge, ro

a = v2/r = w2r

= (1.26)2/0.06

= 26.46 rad/s

D. Calculate the frequency, f of the outer edge angular velocity, w = 21 rad/s

f = 2pi/w

= 2pi/21

= 0.299 Hz (or per second)

5 0
3 years ago
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