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2 years ago

Which describes density?

Physics

2 answers:

LUCKY_DIMON [66]2 years ago

5 0

Answer:

the answer to your question is C, Amount of mass in a given volume

Explanation:

lapo4ka [179]2 years ago

4 0

Answer:

Explanation:

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A machine gun fires 50-g bullets at the rate of 4 bullets per second. The bullets leave the gun at a speed of 1000 m/s. What is

TEA [102]

Answer:

Average recoil force experienced by machine will be 200 N

Explanation:

We have give mass of each bullet m = 50 gram = 0.05 kg

There are 4 bullets

So mass of 4 bullets = 4×0.05 = 0.2 kg

Initial speed of the bullet u = 0 m/sec

And final speed of the bullet v = 1000 m/sec

So change in momentum $P=m(v-u)=0.2\times (1000-0)=200kgm/sec$

Time is given per second so t = 1 sec

We know that force is equal to rate of change of momentum

So force will be equal to $F=\frac{200}{1}=200N$

So average recoil force experienced by machine will be 200 N

5 0

3 years ago

If a force of 26 N is applied to an object with a mass of 8 kg, the object will accelerate at m/s2

malfutka [58]

False, the numbers do not add up

8 0

2 years ago

Read 2 more answers

Which phase of cell division is shown?

dalvyx [7]

Answer:

what was the answer

Explanation:

im taking the quiz and could use some help

6 0

2 years ago

1. What is the difference between longitudinal and transverse waves? Compare and contrast

Anvisha [2.4K]

Answer: image to much to type.

Explanation:

8 0

3 years ago

Q = cmAT

castortr0y [4]

Answer: $Q=3000 cal$

Explanation:

We are given the following formula:

$Q=m. c. \Delta T$ (1)

Where:

$Q=3000 cal$ is the amount of heat

$m=300g$ is the mass of water

$c=1 cal/g \°C$ is the specific heat of water

$\Delta T$ is the variation in temperature, which in this case is $\Delta T=30\°C-20\°C=10\°C$

Rewriting equation (1) with the known values at the right side, we will prove the result is $3000 cal$ :

$Q=(300g)(1 cal/g \°C)(10\°C)$ (2)

$Q=3000 cal$ This is the result

8 0

2 years ago