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jok3333 [9.3K]
2 years ago
7

The acceleration of positive performing SHM is 12cm/sec at distance of 3cm from the mean position its time period is?​

Physics
1 answer:
mina [271]2 years ago
4 0

Answer:

0.25 seconds

Explanation:

this is because speed is measured in metres per second

speed = distance/ time

12cm/sec = 3cm/T

T = 3cm ÷ 12cm/sec

T = 0.25sec

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3 years ago
A cylindrical, 0.500-m rod has a diameter of 0.02 m. The rod is stretched to a length of 0.501 m by a force of 3000 N. What is t
Salsk061 [2.6K]

Answer:

Y = 4.775 x 10⁹ Pa = 4.775 GPa

Explanation:

First, we calculate the stress on the rod:

stress = \frac{Force}{Area} = \frac{3000\ N}{\pi r^2}  \\\\stress = \frac{3000\ N}{\pi (0.01\ m)^2}\\\\stress = 9.55\ x\ 10^6\ Pa = 9.55 MPa\\

Now, we calculate the strain:

strain = \frac{Change\ in Length}{Original\ Length}\\\\strain = \frac{0.501\ m - 0.5\ m}{0.5\ m}\\\\strain =  0.002\\

Now, we will calculate the Young's Modulus (Y):

Y = \frac{stress}{strain}\\\\Y = \frac{9.55\ x\ 10^6\ Pa}{0.002} \\

<u>Y = 4.775 x 10⁹ Pa = 4.775 GPa</u>

6 0
3 years ago
Squids propel themselves by expelling water. They do this by keeping water in a cavity and then suddenly contracting the cavity
Musya8 [376]

Answer:

v_squid = - 2,286 m / s

Explanation:

This exercise can be solved using conservation of the moment, the system is made up of the squid plus the water inside, therefore the force to expel the water is an internal force and the moment is conserved.

Initial moment. Before expelling the water

          p₀ = 0

the squid is at rest

Final moment. After expelling the water

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          0 = M V_squid + m v_water

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            M = 9 -2 = 7 kg

let's calculate

           v_squid = 2 8/7

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The negative sign indicates that the squid is moving in the opposite direction of the water

8 0
3 years ago
Match the letters to the numbers for 30 points!
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3 years ago
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3 years ago
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