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3 years ago

Technologies developed during the Apollo program led to

2 answers:

8 0

Technologies developed during the Apollo program led to different advanced innovations that are designed to hopefully make space travel safer, lengthier, and more productive compared to the previous missions.

exis [7]3 years ago

4 0

the computer revolution.

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What type of muscle is attached to a bone to aid with movement? a. skeletal. c. smooth. b. cardiac. d. none of the above.

Ann [662]

Your answer is A) Skeletal.
Hope this helps, and happy studying~!
~{Dunsforhands}

6 0

3 years ago

The image shows devices that convert wind energy into electrical energy. What is one advantage of using this type of device in p

choli [55]

Answer:

Explanation:

it uses a renewable source

8 0

3 years ago

if the frequency of a sound wave in air remains constant, its energy can be varied by changing its what

Anastaziya [24]

Amplitude, is the answer to the question

6 0

3 years ago

Read 2 more answers

A bullet with a mass m b = 11.9 mb=11.9 g is fired into a block of wood at velocity v b = 261 m/s. vb=261 m/s. The block is atta

fredd [130]

Answer:

0.372 kg

Explanation:

The collision between the bullet and the block is inelastic, so only the total momentum of the system is conserved. So we can write:

$mu=(M+m)v$ (1)

where

$m=11.9 g = 11.9\cdot 10^{-3}kg$ is the mass of the bullet

$u=261 m/s$ is the initial velocity of the bullet

$M$ is the mass of the block

$v$ is the velocity at which the bullet and the block travels after the collision

We also know that the block is attached to a spring, and that the surface over which the block slides after the collision is frictionless. This means that the energy is conserved: so, the total kinetic energy of the block+bullet system just after the collision will entirely convert into elastic potential energy of the spring when the system comes to rest. So we can write

$\frac{1}{2}(M+m)v^2 = \frac{1}{2}kx^2$ (2)

where

k = 205 N/m is the spring constant

x = 35.0 cm = 0.35 m is the compression of the spring

From eq(1) we get

$v=\frac{mu}{M+m}$

And substituting into eq(2), we can solve to find the mass of the block:

$(M+m) \frac{(mu)^2}{(M+m)^2}=kx^2\\\frac{(mu)^2}{M+m}=kx^2\\M+m=\frac{(mu)^2}{kx^2}\\M=\frac{(mu)^2}{kx^2}-m=\frac{(11.9\cdot 10^{-3}\cdot 261)^2}{(205)(0.35)^2}-11.9\cdot 10^{-3}=0.372 kg$

4 0

4 years ago

A football player is running with a velocity or 10 m/s. At that velocity, his momentum is 2500 kg*m/s. What is the football play

DedPeter [7]

The mass of the football player is 250 kg.

<u>Explanation:</u>

Momentum is defined as the product of mass and velocity. So here the velocity (v) is given as 10 m/s and the momentum is given as 2500 kg m /s. So we can determine the mass (m) of the player by substituting the known terms in the formula of determining momentum as shown below.

$\text {Momentum}(p)=m \times v$

As we know the value of momentum and velocity, the mass can be found as,

$m=\frac{p}{v}=\frac{2500}{10}=250 \mathrm{kg}$

Thus, the mass of the football player is found to be 250 kg.

7 0

3 years ago