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3 years ago

Bullets spin when shot from a rifle or handgun. What causes this spinning?

Physics

1 answer:

tamaranim1 [39]3 years ago

7 0

Answer:

The spark from the primer ignites the gunpowder. Gas converted from the burning powder rapidly expands in the cartridge. The expanding gas forces the bullet out of the cartridge and down the barrel with great speed. The rifling in the barrel causes the bullet to spin as it travels out of the barrel.

Explanation:

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A single strain gage has a nominal resistance of 120 ohm. For a quarter bridge with 120 ohm fixed resistors, strain gauge factor

natita [175]

Answer:

Output voltage is 1.507 mV

Solution:

As per the question:

Nominal resistance, R = $120\Omega$

Fixed resistance, R = $120\Omega$

Gauge Factor, G.F = 2.01

Supply Voltage, $V_{s} = 3\ V$

Strain, $\epsilon = 1000\times 10^{-6}\ strain$

Now,

To calculate the output voltage, $V_{o}$ :

WE know that strain is given by:

$\epsilon = \frac{(R + R')^{2}V_{o}}{RR'V_{s}\times G.F}$

Thus

$V_{o} = \frac{RR'V_{s}\epsilon \times G.F}{(R + R')^{2}}$

Now, substituting the suitable values in the above eqn:

$V_{o} = \frac{120\times 120\times 3\times 1000\times 10^{-6}\times 2.01}{(120 + 120)^{2}}$

$V_{o} = 1.507\ mV$

6 0

4 years ago

What is it that lives if it is fed, and dies if you give it a drink?

IceJOKER [234]

A fire because you feed it wood, it lives longer but if you give it a drink, water, then it dies.

6 0

3 years ago

A 25 N force is used to push a box across a floor against a frictional force of 14 N. The box

Svetlanka [38]

Answer:

$m = 44~Kg$

Explanation:

<u>Net Force</u>

Newton's second law explains the dynamics principles when a number of forces are applied to an object.

The net force vector is the sum of the individual vector forces applied. The magnitude of the net force is related to the magnitude of the acceleration of the body as follows:

$Fn=m.a$

Furthermore, the acceleration can be calculated if we know the kinematic behavior of the body:

$\displaystyle a=\frac{v_f-v_o}{t}$

Where vf, vo, and t are the final speed, initial speed, and time, respectively.

The box is pushed across the floor with a force of 25 N against a frictional force of 14 N.

The net force applied to the box is:

$Fn = 25 N - 14 N = 11 N$

We also know the box is accelerated from rest (vo=0) to vf=4 m/s in t=16 seconds, thus:

$\displaystyle a=\frac{4-0}{16}$

$a = 0.25~m/s^2$

From the equation:

$Fn=m.a$

We solve for m:

$\displaystyle m=\frac{Fn}{a}=\frac{11~N}{0.25~m/s^2}$

$\mathbf{m = 44~Kg}$

3 0

3 years ago

What are two reasons the period of Venus is shorter than the period of earth

Setler79 [48]

Answer: The planet, named after the Roman goddess of art and beauty, can actually be bright enough to cast shadows on a moonless night. It appears so close to the sun because its orbital radius is smaller than the Earth's, and because it also moves faster than Earth, its orbital period is shorter.

7 0

3 years ago

A soccer player practices kicking the ball into the goal from halfway down the soccer field. The time it takes for the ball to g

In-s [12.5K]

No, only average speed can be calculated from the distance of 90 meters and the time 3 seconds hope this helps

8 0

3 years ago

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