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Shtirlitz [24]
3 years ago
13

What is a example of the doppler effect

Physics
2 answers:
LiRa [457]3 years ago
5 0

Answer:

Explanation:

The drop in pitch of ambulance sirens as they pass by and the shift in red light are common examples of the Doppler Effect.

nlexa [21]3 years ago
4 0

Answer:

The change in pitch of a siren on an ambulance

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Onsider a ball at rest in the middle of a toy wagon. when the wagon is pulled forward, what happens to the ball? why?
zaharov [31]
It moves back because if the wagon moves forw
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3 years ago
A book having 50 sheets of paper has a thickness of 0.5cm. What will be the thickness of a single sheet in mm
Dafna11 [192]

Answer:

we have to find the thickness of a single sheet in mm.

so,

50 = 0.5 cm

we know that

0.5 cm = 5 mm

NOW THICKNESS OF 50 SHEETS OF PAPER IS 5mm

•°• thickness of one sheet of paper will

5/50

= 0.1 cm

we have to find the answer in mm so

0.1 cm = 1 mm

Explanation:

hope it may help you

5 0
3 years ago
What kind of simple machine is a catapult?
jok3333 [9.3K]
A LEVER is one type of simple machine.
7 0
4 years ago
If a moving body of mass 100g has kinetic energy 45 joules, what will be it's velocity?​
Pavel [41]

Answer:

\boxed{\pink{\sf Velocity \ of \ the \ body \ is \ 30m/s .}}

Explanation:

Given that a body is moving which has a mass of 100g. And its Kinetic energy is 45 Joules . We need to find its velocity . So ,

\boxed{\red{\bf Kinetic\: Energy =\dfrac{1}{2}mv^2 }}

Now here mass is in grams. So converting it into SI units we have , 100/1000 kg = 0.1 kg

\implies KE  =\dfrac{1}{2}mv^2 \\\\\implies 45 J = \dfrac{1}{2}\times \dfrac{1}{10} kg \times v^2 \\\\\implies v^2 = 45 \times 20 \\\\\implies v^2 = 900 m^2/s^2 \\\\\implies v =\sqrt{900 m^2/s^2} \\\\\underline{\boxed{\blue{\tt \implies Velocity = 30m/s }}}

5 0
3 years ago
The first periodic table of elements Mendeleev created contained only 70 elements. True or false?
mr Goodwill [35]

Answer: True

Explanation: Mendeleev created the first periodic table containing 70 elements.

7 0
3 years ago
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