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Novay_Z [31]
4 years ago
10

A rocket takes off from Earth. It travels 825km in 75 seconds. What is the

Physics
1 answer:
Naya [18.7K]4 years ago
4 0

Answer:

11 km/s

Explanation:

v=s/t

v=825km/75s

v=11km/s

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Toma is almost five years old. As he was struggling to learn to tie his shoes, his parents became exasperated with him and bough
olasank [31]

Answer:

Guilt

Explanation:

Erikson´s theory mention that the development of the personality in a human being is define by eight stages in life, depending the experiences and the good feelings or bad ones, men can develop different feelings.

In the stage from 3 to 5, the children can develop initiative or guilt, in this case, since Toma has experience 2 bad  experiences in which he can not deal with the challenge, it will feel guilt.

4 0
4 years ago
Wow ;-; im not gonna even try
kari74 [83]

Answer:

ok

Explanation:

4 0
3 years ago
Read 2 more answers
Rex makes himself a bowl of cereal. He puts 28 g of cereal in a bowl and then adds 245 g of milk. Before eating the cereal, he r
Galina-37 [17]

Answer:

A.)

Explanation:

Because you didn't add anything or take anything away.

5 0
3 years ago
Two wheel gears are connected by a chain. The larger gear has a radius of 8 centimeters and the smaller gear has a radius of 3 c
dezoksy [38]

Answer:

B.The linear velocity of the gears is the same. The linear velocity is 432π centimeters per minute.

Explanation:

As we know that the small gear completes 24 revolutions in 20 seconds

so the angular speed of the smaller gear is given as

\omega = 2\pi\frac{24}{20}

\omega = 2.4\pi rad/s

Now we know that the tangential speed of the chain is given as

v = r \omega

so we have

v = (3 cm)(2.4\pi)

v = 7.2 \pi cm/s

v = 432\pi cm/min

Since both gears are connected by same chain so both have same linear speed and hence correct answer will be

B.The linear velocity of the gears is the same. The linear velocity is 432π centimeters per minute.

8 0
4 years ago
Listed following are several fictitious stars with their luminosities given in terms of the Sun's luminosity (LSun) and their di
vova2212 [387]

Answer:

1. Nismo: L_{a}=0.1244

2. Ferdinand: L_{a}=0.0796, Shelby: L_{a}=0.0796

3. Enzo: L_{a}=0.0398

4. Lotus: L_{a}=0.0199

Explanation:

The luminosity of a star is the amount of light it emits from its surface. The luminosity is an intrinsic property of the star. Apparent brightness is how bright the star appears to a detector on Earth. Apparent brightness is not an intrinsic property of the star; it depends on the location of the observer.

As light travels towards an observer, it spreads out and covers a larger area, reducing the intensity. Thus the apparent brightness is inversely proportionate to the square of the distance between the star and observer.

Apparent brightness can be calculated by the formula below:

L_{a}=\frac{L}{4*pi*D^{2}}

Where, L_{a} is apparent brightness, L is luminosity, D is the distance between the star and observer

Enzo: 200 LSun , 20 ly

L_{a}=\frac{L}{4*pi*D^{2}}

L_{a}=\frac{200}{4*pi*20^{2}}

L_{a}=0.0398

Ferdinand: 400 LSun , 20 ly

L_{a}=\frac{L}{4*pi*D^{2}}

L_{a}=\frac{400}{4*pi*20^{2}}

L_{a}=0.0796

Nismo: 100 LSun , 8 ly

L_{a}=\frac{L}{4*pi*D^{2}}

L_{a}=\frac{100}{4*pi*8^{2}}

L_{a}=0.1244

Lotus: 400 LSun , 40 ly

L_{a}=\frac{L}{4*pi*D^{2}}

L_{a}=\frac{400}{4*pi*40^{2}}

L_{a}=0.0199

Shelby: 100 LSun , 10 ly

L_{a}=\frac{L}{4*pi*D^{2}}

L_{a}=\frac{100}{4*pi*10^{2}}

L_{a}=0.0796

Apparent brightness of stars is summarized as below. Absolute values are considered as units are unspecified

Enzo: L_{a}=0.0398

Ferdinand: L_{a}=0.0796

Nismo: L_{a}=0.1244

Lotus: L_{a}=0.0199

Shelby: L_{a}=0.0796

Organized in order of apparent brightness

1. Nismo: L_{a}=0.1244

2. Ferdinand: L_{a}=0.0796, Shelby: L_{a}=0.0796

3. Enzo: L_{a}=0.0398

4. Lotus: L_{a}=0.0199

5 0
3 years ago
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