2 years ago

Which of the following equations illustrates the law of conservation of matter?

Physics

1 answer:

Anvisha [2.4K]2 years ago

8 0

Answer:

Explanation:

the balancing is correct in the first one

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Why do land animals including meat eaters depend on soil

dexar [7]

They depend on it because this helps them maintain nutirance and survive and reproduce more.

4 0

3 years ago

Kinetic energy is the energy of ______. It increases with mass ______ and _______ .Potential energy is the energy of _______or__

Alona [7]

Answer:

velocity. height. weight. possition. place. energy. force.

Explanation: 50/50 % chance they are wrong and write.

5 0

3 years ago

Car a has a mass of 5 kg and 10 m/s .cart B has a mass of 10 kg and 5 m/s .which of the following statements best compares the i

weeeeeb [17]

The two cars have same momentum

Explanation:

The momentum of an object is given by the equation

$p=mv$

where

m is the mass of the object

v is its velocity

For the car A in this problem,

m = 5 kg

v = 10 m/s

So its momentum is

$p_A = (5 kg)(10 m/s) = 50 kg m/s$

For car B we have,

m = 10 kg

v = 5 m/s

So its momentum is

$p_B = (10 kg)(5 m/s)=50 kg m/s$

Therefore, the two cars have same momentum.

Learn more about momentum:

brainly.com/question/7973509

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7 0

2 years ago

A dolphin is able to tell in the dark that the ultrasound echoes received from two sharks come from two different objects only i

Vlad1618 [11]

Answer:

a) Wavelength of the ultrasound wave = 0.0143 m <<< 3.5m, hence its ability is not limited by the ultrasound's wavelength.

b) Minimum time difference between the oscillations = Period of oscillation = 0.00952 ms

Explanation:

The frequency of the ultrasound wave = 105 KHz = 105000 Hz. The speed of ultrasound waves in water ≈ 1500 m/s. Wavelength = ?

v = fλ

λ = v/f = 1500/105000 = 0.0143 m <<< 3.5m

This value, 0.0143m is way less than the 3.5m presented in the question, hence, this ability is not limited by the ultrasound's wavelength.

b) Minimum time difference between the oscillations = The period of oscillation = 1/f = 1/105000 = 0.00000952s = 0.00952 ms

Hope this helps!

6 0

2 years ago

Find average speed when time= 27s and total distance is 94m

Slav-nsk [51]

3.4814815 (or 3 13/27) m/s

speed = distance/time
3.4814815 (or 3 13/27) = 94/27

8 0

2 years ago