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Artyom0805 [142]
2 years ago
6

Which change to an object would reduce its kinetic energy by half

Physics
1 answer:
Darina [25.2K]2 years ago
8 0

Answer:

I don't really understood the question

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The wavelength at which Earth’s emitted radiation is maximum is ______ at which the wavelength of the Sun’s emitted radiation pe
tatiyna

Answer:

inversely proportional to the temperature

Explanation:

Wein's displacement law states the wavelength at which Earth’s emitted radiation is maximum <u>is inversely proportional to the temperature</u> at which the wavelength of the Sun’s emitted radiation peaks.

                           λmax = \frac{b}{T}

where,

λmax is the maximum wavelength

b is a constant of proportionality called Wien's displacement constant (b = 2.897 × 10⁻³ m.K)

T is the absolute temperature in kelvins

6 0
4 years ago
The wave speed on a string under tension is 200 m/s. What is the speed if the tension is doubled?
Maksim231197 [3]

Answer:

v = 282.84 m / s

Explanation:

The speed of a wave in a wire is given by the equation

       .v = √ T /ρ

Where v is the speed of the wave, T the tension in the wire and ρ the density of the wire

 If the tension is doubled

        T = 2T₀

        v = √ (2T₀ / ρ)

        v = √2   √ T₀ / ρ

        v = √2  v₀

calculate

       v = √2  200

       v = 282.84 m / s

3 0
3 years ago
Which bmi score listed below is considered over weight?
valentinak56 [21]
I don't see any answer choices, but if I remember correctly, the overweight BMI score is 20-22 and up. Probably 22 and up.
5 0
4 years ago
The momentum of a car is 13,300 kgm/s. If it has a speed of 14 m/s, what is the mass of the car?
Tamiku [17]
By definition we have that the linear moment is
 p = m * v
 Where
 m = mass
 v = speed.
 Clearing the mass we have
 m = p / v
 Substituting the values
 m= (13,300 kgm/s)/(14 m/s)=950Kg
 the mass of the car is 950 Kg
7 0
3 years ago
Foraging bees often move in straight lines away from and toward their hives. Suppose a bee starts at its hive and flies 500 m du
Ainat [17]

Answer:

The distance of the bee from the hive is 740 m.

Explanation:

Given that,

Bee starts fly 500 m due east, 430 m west and 670 m east.

The direction of the bee

500 m in positive direction

430 m in negative direction

670 m in positive direction

We need to calculate the net distance

Using formula of distance

D=500-430+670

D=740\ m

Hence, The distance of the bee from the hive is 740 m.

7 0
3 years ago
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