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2 years ago

Explain your answers to 9a and 9b in terms of Newton's laws of motion.

1 answer:

4 0

Answer:i One way to solve the quadratic equation x2 = 9 is to subtract 9 from both sides to get one side equal to 0: x2 – 9 = 0. The expression on the left can be factored:

Explanation:

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A substance that accelerates any chemical reaction but is not consumed in the reaction is a _____.

Mandarinka [93]

A. Catalyst. ---------------

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3 years ago

Read 2 more answers

A ball is dropped from a high rise platform at t=0 starting from rest. After 6 seconds another ball is thrown downwards from the

AlekseyPX

Answer:

73.5 m/s

Explanation:

The position of the first ball is:

y = y₀ + v₀ t + ½ at²

y = h + (0)(18) + ½ (-9.8)(18)²

y = h − 1587.6

The position of the second ball is:

y = y₀ + v₀ t + ½ at²

y = h + (-v) (18−6) + ½ (-9.8)(18−6)²

y = h − 12v − 705.6

Setting the positions equal:

h − 1587.6 = h − 12v − 705.6

-1587.6 = -12v − 705.6

1587.6 = 12v + 705.6

882 = 12v

v = 73.5

The second ball is thrown downwards with a speed of 73.5 m/s

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3 years ago

What happens to the gravitational force between two masses when the distance between the masses is doubled?

vovangra [49]

Answer:

It decreases by a factor of 4

Explanation:

The gravitational force between two masses is given by

$F=\frac{Gm_1 m_2}{r^2}$

where

G is the gravitational constant

m1, m2 are the two masses

r is the separation between the two masses

In this problem, the distance between the masses is doubled, so

r' = 2r

Substituting into the equation, we see that the new force is

$F'=\frac{Gm_1 m_2}{(2r)^2}=\frac{1}{4}\frac{Gm_1m_2}{r^2})\frac{F}{4}$

So, the force decreases by a factor of 4.

6 0

3 years ago

NEED HELP ASAP

katrin [286]

Answer:

its In most solids, conduction takes place as particles vibrate in place.

Explanation:

i did it in a test

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3 years ago

What is the average power dissipated by a resistor of resistance R = 25 Ω in an LRC circuit for which the power factor is equal

olga55 [171]

Answer:

0.08 w

Explanation:

AVERAGE POWER : Average power is defined as the average work per unit time. average power is denoted by P its depend on the voltage current and power factor.

the expression for the average power is given as

P= $V_r$ $I_r$ cosΦ