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2 years ago

A box has sides of 10 cm, 8.2 cm, and 3.5 cm. What is its volume?

Physics

1 answer:

Ksju [112]2 years ago

4 0

The volume would be 287cm³. Multiply all the 3 numbers by each other

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The two types of decomposers

ycow [4]

Bacteria,Worms, Slugs, Snails, and Fungi are all types of decomposers

6 0

3 years ago

Shrill sound is of -------------- *

Leona [35]

Answer:

Higher frequency.

Explanation:

Sound are mechanical waves that are highly dependent on matter for their propagation and transmission.

Sound travels faster through solids than it does through either liquids or gases. A student could verify this statement by measuring the time required for sound to travel a set distance through a solid, a liquid, and a gas.

Mathematically, the speed of a sound is given by the formula:

$Speed = wavelength * frequency$

Generally, the frequency of a sound wave determines the pitch of the sound that would be heard.

A shrill sound refers to a type of sound that is typically sharp, high pitched and as such has higher frequency.

Hence, shrill sound is of higher frequency.

6 0

2 years ago

Which best describes a chain reaction associated with a nuclear reaction?

mojhsa [17]

I think fission chain reaction is the correct answer.

8 0

3 years ago

I'm stuck on question 3. Could anyone please explain it?

sergiy2304 [10]

Peak voltage is 2
period is 40ms
frequency = 1/period = 25Hz

5 0

2 years ago

A 2 kg object traveling at 5 m s on a frictionless horizontal surface collides head-on with and sticks to a 3 kg object initiall

Svetlanka [38]

Answer: (d)

Explanation:

Given

Mass of object $m=2\ kg$

Speed of object $u=5\ m/s$

Mass of object at rest $M=3\ kg$

Suppose after collision, speed is v

conserving momentum

$\Rightarrow mu+0=(m+M)v\\\\\Rightarrow v=\dfrac{2\times 5}{2+3}\\\\\Rightarrow v=2\ m/s$

Initial kinetic energy

$k_1=\dfrac{1}{2}\times 2\times 5^2\\\\k_1=25\ J$

Final kinetic energy

$k_2=\dfrac{1}{2}\times (2+3)\times 2^2\\\\k_2=10\ J$

So, it is clear there is decrease in kinetic energy . Thus, energy decreases and velocity becomes 2 m/s.

4 0

2 years ago