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3 years ago

9

A block has acceleration a when pulled by a string. if two identical blocks are glued together and pulled with twice the origina

l force, what will their acceleration be?

1 answer:

WINSTONCH [101]3 years ago

5 0

<span>F = m x a 2F = 2m x a a = 2F / 2m a = F/m The acceleration would be the same.</span>

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What was john philip career

goldfiish [28.3K]

Answer:

John Philip Sousa gained great proficiency on the violin, age of 13 he was almost persuaded to join a circus band,his father intervened and enlisted him as an apprentice musician in the Marine Band, Louis, he received a telegram offering him the leadership of the Marine Band in Washington

Explanation:

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3 years ago

What mass of silver will occupy a volume of 87.75 mL?<br>The density of silver is 10.49 g/mL.

Anastaziya [24]

Answer:

The mass of silver that will occupy a volume of 87.75 mL is 920.5 grams.

Explanation:

Density is defined as the property that matter, whether solid, liquid or gas, has to compress into a given space. In other words, density is a quantity that allows us to measure the amount of mass in a certain volume of a substance. Then, the expression for the calculation of density is the quotient between the mass of a body and the volume it occupies:

$density=\frac{mass}{volume}$

So the density of silver is 10.49 g / mL indicates that 10.49 g occupies a volume of 1 mL. Then a rule of three can be applied in the following way: if in 1 mL a mass of 10.49 g is occupied, in 87.75 mL how much mass will it occupy?

$mass=\frac{87.75 mL*10.49 g}{1 mL}$

mass= 920.5 g

<u><em> The mass of silver that will occupy a volume of 87.75 mL is 920.5 grams.</em></u>

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3 years ago

The moon has a mass of 7.35x1022 kg and is a lot farther away than is shown in textbooks. The mass of the

anyanavicka [17]

Answer:

$F=1.98\times 10^{20}\ N$

Explanation:

Given that,

The mass of a Moon, $M_m=7.35\times 10^{22}\ kg$

The mass of the Earth, $M_e=5.98\times 10^{24}\ kg$

The moon's mean orbit distance around the earth is, $r=3.84\times 10^8\ m$

We need to find the gravitational force exerted on the moon by the Earth.

The formula of gravitational force is given by :

$F=G\dfrac{M_mM_e}{r^2}\\\\F=6.67\times 10^{-11}\times \dfrac{7.35\times 10^{22}\times 5.98\times 10^{24}}{(3.84\times 10^8)^2}\\\\F=1.98\times 10^{20}\ N$

So, the required force is $1.98\times 10^{20}\ N$ .

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3 years ago

A shovel pushes on dirt and the dirt pushes back on the shovel. The dirt pushing back is

Leno4ka [110]

The dirt pushing back is the 'resistance' force. It RESISTS your attempts to shovel it.

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3 years ago

Augie created this chart about the two kinds of waves. Which best labels the chart? Title 1 is "Longitudinal Waves," and Title 2

PIT_PIT [208]

Answer:

Explanation:

There are three types of waves mainly.

1. Mechanical waves : Which needs a medium for there propagation. For example, sound waves

2. Non mechanical waves : Which do not need a medium or their propagation.

for example, light waves

3. Electromagnetic waves : Which are produced due to the interaction of electric and magnetic field. for example, X rays, light waves

The wave motion are of two types.

1. Transverse wave motion

2. Longitudinal wave motion

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4 years ago

Read 2 more answers