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3 years ago

15

1 point

1 answer:

Oduvanchick [21]3 years ago

5 0

The distance it traveled is 147

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Kepler's third law can be used to compare the moon's orbit around the earth to the orbit of the earth around the sun.

Pavlova-9 [17]

No, you can't! The planet should rotate around a common body!

5 0

3 years ago

(2 points) A pair of students measure the intensity of light from a desklamp in Sec. 4.5 of the experiment. When the detector is

Novosadov [1.4K]

Answer:

Intensity at 45 cm will be 0.2283 volt

Explanation:

We have given that intensity of signal measured by the detector is 0.74 volt at a distance of 25 cm

We know that intensity of signal is given by $I=\frac{s}{r^2}$ , here s is strength of light and r is distance

So $0.74=\frac{s}{{25}^2}$

$s=462.5$

In second case

Intensity is given by $I=\frac{s}{r^2}$

So $I=\frac{462.5}{45^2}=0.2283volt$

4 0

3 years ago

When three people with a total mass of 2.00 x 102 kg step into their 1.200 x 103 kg car, the car’s

Aleksandr-060686 [28]

Answer:

a

$k = 457333.3 N/m$

b

$x_a =0.09\ m$

Explanation:

From the question we are told that

The total mass of three people is $M = 2.00*10^{2} \ kg$

The mass of the car is $m_c = 1.200 *10^{3} \ kg$

The compression of the car spring is $x = 3 \ cm = 0.03 \ m$

Generally the spring constant is mathematically represented as

$k = \frac{F}{x}$

Here F is the force exerted by the mass of three people and that of the car , this is mathematically represented as

=> $F = (M +m_c) *g$

=> $F = ([2.0*10^{2} ]+[ 1.200*10^{3}]) * 9.8$

=> $F = 13720 \ N$

So

$k = \frac{13720}{0.03}$

=> $k = 457333.3 N/m$

Generally if the mass which the car is loaded with is $m = 3.00*10^{2} \ kg$

Then the force experienced by the spring is

=> $F_a = (m +m_c) *g$

=> $F_a = (3.00*10^{3} + 1.200 *10^{3}) * 9.8$

=> $F_a = 41160 \ N$

Generally from the above formula the compression is

$x_a = \frac{F_a}{k}$

=> $x_a = \frac{41160}{457333.3}$

=> $x_a =0.09\ m$

3 0

3 years ago

How does using heat as a catalyst affect a chemical reaction?

Goryan [66]

The catalyst lowers the activation energy.

6 0

2 years ago

Q.1 Lorna built the circuit diagram below. All the bulbs are identical. (a) Complete the table below by writing on or off for ea

irga5000 [103]

Answer:

on and off

Explanation:

if there are switches, it can change if the electricity can get to the bulb or not. if it appears that there is no pathway for the electricity to get to the light bulb, it is of, if there is a pathway, its on

8 0

2 years ago