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vampirchik [111]
2 years ago
9

The cart is then pushed up the ramp, compressing the spring a distance A from equilibrium. When

Physics
1 answer:
xxTIMURxx [149]2 years ago
8 0

When the spring is replaced with a spring with double of initial spring constant k2 = 2k₁, the new period, T2, is \sqrt{\frac{1}{2} } \ T_1.

<h3>Period of the mass oscillation</h3>

The period of the oscillation of the mass or cart on the spring is given by the following formula;

T = 2\pi \sqrt{\frac{m}{k} } \\\\

at a costant mass;

T_1\sqrt{k_1} = T_2\sqrt{k_2} \\\\T_2 = \frac{T_1\sqrt{k_1} }{\sqrt{k_2} }

when spring constant is doubled, k2 = 2k1. the new period, T2 is determined as follows;

T_2 = \frac{T_1\sqrt{k_1} }{\sqrt{2k_1} } \\\\T_2 = \frac{T_1\sqrt{k_1} }{\sqrt{2} \times \sqrt{k_1} } \\\\T_2 = \frac{T_1}{\sqrt{2} }\\\\T_2 = \sqrt{\frac{1}{2} } \ T_1

Thus, when the spring is replaced with a spring with double of initial spring constant k2 = 2k₁, the new period, T2, is \sqrt{\frac{1}{2} } \ T_1.

Learn more about period of oscillation here: brainly.com/question/20070798

#SPJ1

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The thermal energy used by heater in 3 minutes is used to melt wax.Melting point of solid wax is 60.Specific heat of wax is 220j
Romashka-Z-Leto [24]

Answer:

m = 35 g

Explanation:

The specific heat of a material can be calculated by the following formula:

C = \frac{Q}{m}\\

where,

C = Specific Heat of Wax = 220 J/g

Q = Amount of Heat Supplied by the Heater = 7700 J

m = mass of wax melted = ?

Therefore,

220\ J/g = \frac{7700\ J}{m}\\\\m = \frac{7700\ J}{220\ J/g}\\

<u>m = 35 g </u>

5 0
3 years ago
Wile E. Coyote stands on top of a 90-meter high cliff, looking down at the Roadrunner. If
Lina20 [59]

Answer:

33.516 kJ

Explanation:

Potential energy is given by:

PE = mgh

Where m is the mass, g is acceleration due to gravity, and h is the height. In this case:

PE = 38kg x 9.8m/s^2 x 90m = 33516 kg m^2/s^2 = 33516 J = 33.516 kJ

6 0
3 years ago
Four copper wires of equal length are connected in series. Their cross-sectional areas are 0.7 cm2 , 2.5 cm2 , 2.2 cm2 , and 3 c
Travka [436]

Answer:

22.1 V

Explanation:

We are given that

A_1=0.7 cm^2=0.7\times 10^{-4} m^2

A_2=2.5 cm^2=2.5\times 10^{-4} m^2

A_3=2.2 cm^2=2.2\times 10^{-4} m^2

A_4=3 cm^2=3\times 10^{-4} m^2

Using 1cm^2=10^{-4} m^2

We know that

R=\frac{\rho l}{A}

In series

R=R_1+R_2+R_3+R_4

R=\frac{\rho l}{A_1}+\frac{\rho l}{A_2}+\frac{\rho l}{A_3}+\frac{\rho l}{A_4}

R=\frac{\rho l}{\frac{1}{A_1}+\frac{1}{A_2}+\frac{1}{A_3}+\frac{1}{A_4}}

Substitute the values

R=\rho A(\frac{1}{0.7\times 10^{-4}}+\frac{1}{2.5\times 10^{-4}}+\frac{1}{2.2\times 10^{-4}}+\frac{1}{3\times 10^{-4}})

R=\rho l(2.62\times 10^4)

V=145 V

I=\frac{V}{R}=\frac{145}{\rho l(2.62\times 10^4)}

Voltage across the 2.5 square cm wire=IR=I\times \frac{\rho l}{A_2}

Voltage across the 2.5 square cm wire=\frac{145}{\rho l(2.62\times 10^4)}\times \frac{\rho l}{2.5\times 10^{-4}}=22.1 V

Voltage across the 2.5 square cm wire=22.1 V

6 0
3 years ago
Non-living factors in an ecosystem are<br><br> biotic<br><br> abiotic<br><br> antibiotic
zaharov [31]

Answer:

Abiotic

Explanation:

The non living factors of the ecosystem which is essential for the survival of living factors of the ecosystem are abiotic factors.

Examples for abiotic factors include temperature, sunlight, water, wind etc....

3 0
3 years ago
Questions -
irga5000 [103]

Complete Question

The complete question is shown on the first uploaded image

Answer:

The value of  X =  1000 \  N and  Y  =  1400 \ N  

Explanation:

Considering the diagram,

   Taking moment about the pivot , we have

           X *  1 =  400 *  2.5

=>         X =  1000 \  N

Generally given that the bar is at equilibrium then the upward forces is equal to the down ward force

So

        Y  =  X  +  400

=>     Y  =  1000  +  400

=>     Y  =  1400 \ N    

   

3 0
3 years ago
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