3 years ago

What is wrong about the picture below

Physics

1 answer:

Oliga [24]3 years ago

4 0

what even is that ??

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A glass rod rubbed with a tissue paper would strip away electrons from the atoms in glass rod. This would acquire positive charg

Gemiola [76]

Answer:

when this charged glass rod is brought towards the metal ball it will acquire a charge opposite to that of charge body brought close to it without touching it but it will acquire the same charge if the charged object touches it

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3 years ago

A baton twirler has a baton of length 0.36 m with masses of 0.48 kg at each end. Assume the rod itself is massless. The rod is f

AleksAgata [21]

Answer:

Part a)

When rotated about the mid point

$\tau = 0.021Nm$

Part b)

When rotated about its one end

$\tau = 0.042 Nm$

Explanation:

As we know that the angular acceleration of the rod is rate of change in angular speed

so we will have

$\alpha = \frac{\Delta \omega}{\Delta t}$

$\alpha = \frac{2.4 - 0}{3.6}$

$\alpha = 0.67 rad/s^2$

Part a)

When rotated about the mid point

$I = 2mr^2$

$I = 2(0.48)(0.18)^2$

$I = 0.0311 kg m^2$

now torque is given as

$\tau = 0.0311 (0.67)$

$\tau = 0.021Nm$

Part b)

When rotated about its one end

$I = m(2r)^2$

$I = (0.48)(0.36)^2$

$I = 0.0622 kg m^2$

now torque is given as

$\tau = (0.0622)(0.67)$

$\tau = 0.042 Nm$

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3 years ago

A traveling wave has wavelength 0.50 m, speed 20 m/s. Find the wave frequency.

BigorU [14]

Frequency = (speed) / (wavelength) = 20 / 0.5 = 40 per second = 40 Hz.

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3 years ago

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Isaac Newton's first law of motion states?

lesya [120]

Answer:

His first law states that every object will remain at rest or in uniform motion in a straight line unless compelled to change its state by the action of an external force. In other words its inertia.

Explanation:

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A new car manufacturer advertises they their car can go from zero to sixty in 8 seconds. This is a description of

Svetllana [295]

The acceleration. The units of acceleration in this case are $\frac{miles}{ hours^{2} }$
When we multiply that by time (8 seconds, or 0.0022hrs in this case) our units are then miles per hour.

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3 years ago