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scoray [572]
3 years ago
7

(3) A Ninja motorcycle is moving down I95 at 160 miles per hour (72 m/s) and a cop uses a radar gun to measure the speed. Using

the formula:
( λ’ -λo)/λo =v/c with a laboratory wavelength of 2.8 cm, can you answer whether of not the radar gun uses the doppler effect to directly measure speed from the motorcycle?
Physics
1 answer:
Virty [35]3 years ago
5 0

Answer:

it does use it at doppler

Explanation:

My dad told me the hes a cop so yw

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UkoKoshka [18]

2nd egg experienced more impulse

Hope this helps! :)

7 0
3 years ago
In what phase change do molecules completely overcome the intermolecular
Anika [276]
(B.) I know it’s not that hard or easy so don’t be made if wrong
8 0
2 years ago
Solve this chemical equation: CH3CH2OH+__O2=CO2+__H2O
masha68 [24]

Answer:

some kind of chemical of which i do not know

Explanation:

4 0
2 years ago
. Reem took a wire of length 10 cm. Her friend Nain took a wire of 5 cm of the same material and thickness both of them connecte
Umnica [9.8K]

Given :

Reem took a wire of length 10 cm. Her friend Nain took a wire of 5 cm of the same material and thickness both of them connected with wires as shown in the circuit given in figure. The current flowing in both the circuits is the same.

To Find :

Will the heat produced in both the cases be equal.

Solution :

Heat released is given by :

H = i²Rt

Here, R is resistance and is given by :

R = \dfrac{\rho L}{A}

So,

H = i^2\times \dfrac{\rho L}{A} t\\\\H = \dfrac{i^2\rho Lt}{A}

Now, in the question every thing is constant except for the length of the wire and from above equation heat is directly proportional to the length of the wire.

So, heat produced by Reem's wire is more than Nain one.

Hence, this is the required solution.

7 0
3 years ago
The composition of the protoplanetary disk varies with distance from the protostar due to temperature.
lesantik [10]

Answer:

b) 1. Iron, silicates, carbon

   2. Water

   3. Methane, Ammonia, Carbon Dioxide.

Explanation:

Protoplanetry disk is the disk of gases and clouds of dust that rotates around the newly made star. The temperature of the protoplanetry disk actually determines the type of the planet that is to be formed. Inner part of the protoplanetry disk is closer to the sun thats why it is the hottest and denser part and composed of the materials like Iron, silicates, carbon as they have high melting points. Then comes those materials that exist in the solid form at lower temperatures such as the volatile materials like water. Ater that the protoplanetry disk is made of highly volatile materials that exists in solid from only at low coldest temperatures. So the outer part of the protoplanetry disk  is made up of the Methane, Ammonia and Carbon Dioxide.

7 0
3 years ago
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