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3 years ago

You are riding on a school bus and suddenly get thrown forward. What did the bus just do?

2 answers:

8 0

You are thrown the direction that the bus was originally going.

If the bus is going straight and it turns left your body will keep trying to go straight. This is the same if the bus turns to the left.

We know the answer is not A and D however because when turning you are not 'suddenly' thrown forward.

We know it cannot be that the bus was going backward and suddenly stopped because you would fly in the original direction of the bus which is backwards.

The answer is B because you are going forward, then suddenly stop, which means you are suddenly flung in the direction the bus was originally going which was forward.

Alexeev081 [22]3 years ago

3 0

B. The bus is going forward and suddenly stopped.

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How to find a planet’s gravitational field strength using its radius?

grin007 [14]

The gravitational field strength is approximately equal to 10 N.

<u>Explanation:</u>

Gravitational field strength is the measure of gravitational force acting on any object placed on the surface of the planet. Generally, the mass of the object is considered as 1 kg.

So the gravitational field strength will be equal to the gravitational force acting on the object.

The formula for gravitational field strength is

$g = \frac{F}{m}$

Here g is the gravitational field strength, m is the mass of the object placed on the surface and F is the gravitational force acting on the object.

Since, the mass of any object placed on the surface of earth will be negligible compared to the mass of Earth, so the mass of the object is considered as 1 kg.

Then the g = F

And $F =\frac{GMm}{r^{2} }$

Here G is the gravitational constant, M is the mass of Earth and m is the mass of the object placed on the surface, while r is the radius of the Earth.

$g = F = \frac{6 \times 10^{24} \times 6.67 \times 10^{-11} \times 1}{(6.6 \times 10^{6}) ^{2} }$

$g = 0.977 \times 10^1= 9.77\ N$

So, the gravitational field strength is approximately equal to 10 N.

5 0

3 years ago

WHAT SHOULD I NAME MY DEAD RAT?

olga_2 [115]

Answer:

pablito

Explanation:

6 0

2 years ago

Heptane and water do not mix, and heptane has a lower density (0.684 g/mL) than water (1.00 g/mL). A graduated cylinder contains

lakkis [162]

Given that the density of heptane is

$d_h=\frac{0.684g}{mL}$

The mass of heptane is

$m_h=31\text{ g}$

The density of water is

$d_w=\frac{1g}{mL}$

The mass of water is

$m_w=37\text{ g}$

The volume of heptane will be

$\begin{gathered} V_h=\frac{m_h}{d_h} \\ =\frac{31}{0.684} \\ =45.32\text{ mL} \end{gathered}$

The volume of water will be

$\begin{gathered} V_w=\frac{m_w}{d_w} \\ =\frac{37}{1} \\ =37\text{ mL} \end{gathered}$

Thus, the volume of heptane is 45.32 mL and the volume of water is 37 mL.

The total volume of liquid in the cylinder will be

$\begin{gathered} V=V_h+V_w \\ =45.32+37 \\ =82.32\text{ mL} \end{gathered}$

The total volume of liquid in the cylinder will be 82.32 mL.

7 0

11 months ago

When sunlight shines on a leaf the leaf looks green why does the leaf look green

KonstantinChe [14]

The correct answer is the third, It reflects the green light waves and absorbs most of the rest.

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2 years ago

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What does a animal and a plant cell have in common.

Allushta [10]

Answer:

Structures that are common to plant and animal cells are the cell membrane, nucleus, mitochondria, and vacuoles. Structures that are specific to plants are the cell wall and chloroplasts.

Explanation:

if correct plzz brainliest :D

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2 years ago

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