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Tju [1.3M]
4 years ago
7

A cyclist rides in a circle with speed 5 m/s. What is his centripetal

Physics
1 answer:
Reptile [31]4 years ago
6 0

Answer: 1.32 m/s^2

Explanation:

Centripetal acceleration is given by the formula

a = ( v^2 ) / r

where a is centripetal acceleration, v is velocity and r is radius.

We know that,

v = 5 m/s

r = 19m

Now,

a = ( v^2 ) / r

a = ( 5^2 ) / 19

a = 25 / 19

a = 1.32 m/s^2

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The specific heat of acetic acid is 2.07 J/gºC. If 1150 J of heat is
Doss [256]

Answer:

12.3 °C

Explanation:

Q=m*Cp*ΔT-->

1150=45*2.07*ΔT-->

ΔT=1150/93.15-->

ΔΤ=12.3 °C

4 0
3 years ago
Which of the following is a measurement of acceleration?
Tems11 [23]
B is the correct answer because an object moving ten north m/s will turn into 15m/s which as you can tell is accelerating.
6 0
3 years ago
When an object is fully converted into energy the amount of energy liberated is
EleoNora [17]

Answer:

Mass, m = 4 kg

Explanation:

<u>Given the following data;</u>

Energy = 3.6 * 10^17 Joules

We know that the speed of light is equal to 3 * 10⁸ m/s.

To find the mass of the substance;

The theory of special relativity by Albert Einstein gave birth to one of the most famous equation in science.

The equation illustrates, energy equals mass multiplied by the square of the speed of light.

Mathematically, the theory of special relativity is given by the formula;

E = mc^{2}

Where;

  • E is the energy possessed by a substance.
  • m is the mass.
  • c is the speed of light.

Substituting into the formula, we have;

3.6 * 10^{17} = m * 300000000^{2}

3.6 * 10^{17} = m * 9*10^{16}

m = \frac {3.6 * 10^{17}}{9*10^{16}}

Mass, m = 4 kg

8 0
3 years ago
Which choice would reveal a chemical property of water?
r-ruslan [8.4K]

Answer:

D

Explanation:

Testing The PH Means Testing The acidity level of the water of which would be a chemical reaction

8 0
3 years ago
Which of the following is an SI unit
Alla [95]

SI will always be in metric, so the answer is D. Meter.

3 0
4 years ago
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