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konstantin123 [22]
3 years ago
14

Define fundamental unit.​

Physics
1 answer:
Sever21 [200]3 years ago
7 0

Answer:

Those units which are independent of each other are called fundamental unite. there are seven fundamental unite of seven fundamental quantities

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An observer notes that the pitch of a sound is becoming progressively higher.the observer can conclude that the sound is moving
Dahasolnce [82]
The observer can conclude that the sound is moving away from them and that its speed is increasing.
6 0
4 years ago
Two cars are traveling at the same constant speed v. Car A is moving along a straight section of the road, while B is rounding a
Kamila [148]

Answer:

Car A is not accelerating, but car B is accelerating

Explanation:

Car A is not accelerating because , it is moving with uniform speed in a particular direction . Therefore its velocity too is not changing .

But car B is accelerating because , though its speed is uniform but its velocity is changing due to change in direction . On a circular path , direction of speed changes every moment . Therefore it has an acceleration called centripetal acceleration . Hence car B has acceleration.

7 0
4 years ago
A grocery shopper tosses a(n) 9.4 kg bag of rice into a stationary 19.9 kg grocery cart. The bag hits the cart with a horizontal
IRINA_888 [86]

The final speed of the cart and the bag is 2.2 m/s

Explanation:

We can solve this problem by using the law of conservation of momentum: in fact, in absence of external forces, the total momentum of the bag and the cart must be conserved before and after the collision.

Mathematically:

p_i = p_f\\m_1 u_1 + m_2 u_2 = (m_1+m_2)v  

where:  

m_1 = 9.4 kg is the mass of the bag of rice

u_1 = 7.0 m/s is the initial velocity of the bag

m_2 = 19.9 kg is the mass of the cart

u_2 =0 m/s is the initial velocity of the cart (at rest)

v is the final combined velocity of the bag and the cart

Re-arranging the equation and solving for v, we find:  

v=\frac{m_1 u_1 + m_2 u_2}{m_1+m_2}=\frac{(9.4)(7.0)+0}{9.4+19.9}=2.2 m/s

Learn more about momentum here:

brainly.com/question/7973509  

brainly.com/question/6573742  

brainly.com/question/2370982  

brainly.com/question/9484203  

#LearnwithBrainly

5 0
3 years ago
A gold bar has a density of 19.3 g/mL. If the gold bar has a mass of 6.3 grams, what is the volume?
Natali [406]

Answer:

The correct answer is "0.32 mL".

Explanation:

The given values are:

Density of gold bar,

d = 19.3 g/mL

Mass of gold bar,

m = 6.3 grams

Now,

The volume will be:

⇒  Density = \frac{Mass}{Volume}

or,

⇒  Volume=\frac{Mass}{Density}

On substituting the values, we get

⇒               =\frac{6.3 \ g}{19.3 \ g/mL}

⇒               =0.32 \ mL

7 0
3 years ago
What is the frequency of a sound wave having a velocity of 341 meters/second and a wavelength of 0.8 meters?
Brums [2.3K]
We know, Frequency = speed / wavelength 
f = 341 / 0.8
f = 426.25 Hz

In short, Your Answer would be 426.25 Hz

Hope this helps!
6 0
3 years ago
Read 2 more answers
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