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3 years ago

7

Of orbital radius, orbital velocity, orbital circumference, or radial area swept through, which of these stays constant accordin

g to one of Kepler’s Laws?
a. orbital distance
b. radial area swept through
c. none of these
d. orbital velocity

1 answer:

kow [346]3 years ago

5 0

Answer:

dyow

Explanation:

sorrrey

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We can compare these two interactions on the basis of impulse (see above), but sometimes, we are more interested in the forces (

kiruha [24]

Complete Question

The complete question is shown on the first uploaded image

Answer:

a

$I = 476 \ N \cdot s$

b

$I_1 = 14.21 \ N\cdot s$

c

$F = 20300 \ N$

Explanation:

Considering the first question

From the question we are told that

The force produced is $F = 3400 \ N$

The duration of the punch is $t = 0.14 \ s$

Generally the impulse delivered is mathematically represented as

$I = F * t$

=> $I = 3400 * 0.14$

=> $I = 476 \ N \cdot s$

Considering the second question

The approaching velocity of the ball is $v_b = 45 \ m/s$

The leaving velocity of the ball is $v_l = -53 \ m/s$

The mass of the ball is $m_b = 0.145 \ kg$

Generally the magnitude of the impulse delivered is mathematically represented as

$I_1 = m* v_b - m * v_l$

=> $I_1 = [0.145 * 45] - [0.145 * -53]$

=> $I_1 = 14.21 \ N\cdot s$

Considering the third question

The duration of the impact of the bat is $t _1 = 0.7 \ ms = 0.7 *10^{-3} \ s$

Generally the average force exerted by the bat is mathematically represented as

$F = \frac{I_1}{t_1}$

=> $F = \frac{14.21 }{0.7 *10^{-3}}$

=> $F = 20300 \ N$

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Which of the following BEST describes what occurs in a fusion reaction?

Greeley [361]

Answer:

Two mass nuclei are joined to form one nucleus

Explanation:

As the name implies "fusion", it is the joining of lighter nucleus to form a heavier nucleus to produce energy

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