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3 years ago

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An orange of mass 40g falls freely from a tree to the ground through a distance of 2.5m. Calculate the velocity just before it h

its the ground.

1 answer:

Jobisdone [24]3 years ago

4 0

140 is the velocity because you need to multiply 40×2.5

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The Moon has too little iron, Mercury too much. How can both of these anomalies be the result of giant impacts? Explain how the

arsen [322]

Answer:

Explanation:

Giant impact has resulted into formation of celestial bodies such as moon.

Moon was formed years after the Earth was formed. When Earth collided with very big size bodies, there was vaporization of chunks of the planets in to the space. Gravity plays its role and bounded those particles together thus forming moon.

This formation explains Moon is made up of lighter elements and contains too little iron where as Mercury was formed with the rest of the planets and just like earth, its core is formed first which is of iron and then collected the lighter elements to form crust and mantle.

Though both Moon and Mercury were the result of giant impacts yet they have different elements because mercury was made earlier and its is closer to moon hence it collected heavy elements such as iron to for the formation where as moon is the result of collision of Earth and other Mars- sized body hence its constituent particles are different that of mercury.

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3 years ago

What step of the scientific method involves asking a question based on an observation

Nataly [62]

Answer: it’s the first one I think

Explanation:

5 0

4 years ago

Read 2 more answers

A proton initially moves left to right along the x-axis at a speed of 2.00 x 103 m/s. It moves into an uniform electric field, w

FinnZ [79.3K]

Answer:

E = 1.04*10⁻¹ N/C

Explanation:

Assuming no other forces acting on the proton than the electric field, as this is uniform, we can calculate the acceleration of the proton, with the following kinematic equation:

$vf^{2} -vo^{2} = 2*a*x$

As the proton is coming at rest after travelling 0.200 m to the right, vf = 0, and x = 0.200 m.

Replacing this values in the equation above, we can solve for a, as follows:

$a = \frac{vo^{2}*mp}{2*x} = \frac{(2.00e3m/s)^{2}}{2*0.2m} = 1e7 m/s2$

According to Newton´s 2nd Law, and applying the definition of an electric field, we can say the following:

F = mp*a = q*E

For a proton, we have the following values:

mp = 1.67*10⁻²⁷ kg

q = e = 1.6*10⁻¹⁹ C

So, we can solve for E (in magnitude) , as follows:

$E = \frac{mp*a}{e} =\frac{1.67e-27kg*1e7m/s2}{1.6e-19C} = 1.04e-1 N/C$

⇒ E = 1.04*10⁻¹ N/C

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3 years ago

A charge q moves from point A to point B in an electric field. The potential energy of the charge at point A is 5.6 × 10-10 joul

Ierofanga [76]

From your choices which are
A. 5.6 × 10-12 joules
B. 1.3 × 10-12 joules
C. 2.3 × 10-12 joules
D. 3.3 × 10-10 joules
E. 5.6 × 10-10 joules

The answer is 3.3 × 10-10 joules. The answer is letter c.

7 0

3 years ago

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A gas is placed in a 5.0-mL syringe. It exerts 127 mm Hg of pressure on the inside walls of the syringe. The syringe's plunger i

Gekata [30.6K]

Answer:264.58 mm of Hg

Explanation:

Given

Volume of gas $V_1=5\ mL$

Pressure $P_1=127\ \text{mm of Hg}$

If the Plunger is pressed volume is reduced to

$V_2=2.4\ mL$

As temperature of the gas does not change so it follows boyle's law

According to which

$P_1V_1=P_2V_2$

$127\times 5=P_2\times 2.4$

$P_2=264.58\ \text{mm of Hg}$

8 0

3 years ago