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3 years ago

A charge of 8.4*10^-4 moves at an angle of 35 degrees to a magnetic field that has a field strentgh of 6.7

Physics

1 answer:

12345 [234]3 years ago

3 0

The force on a charged particle in a magnetic field is given by

the speed of the charged particle = 10842 m/s.

Explanation:

F= q V B sinθ

F=force=3.5 x 10⁻²N

q= charge= 8.4 x 10⁻⁴ C

B= magnetic field= 6.7 x 10⁻³ T

θ=35⁰

Thus the velocity is given by V= $\frac{F}{q B sin35}$

V=(3.5 x 10⁻²)/[(8.4 x 10⁻⁴)(6.7 x 10⁻³)(sin35)]

V=10842 m/s

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Coherent, monochromatic light is incident on a pair of slits that are 0.3 mm apart. When light passes through the slits and stri

ladessa [460]

Answer:

550 nm

Explanation:

The formula for the double-slit diffraction experiment is:

$y=\frac{m\lambda D}{d}$

where

y is the distance of the m-th maximum from the central fringe

$\lambda$ is the wavelength of the light used

D is the distance of the screen from the slits

d is the separation between the slits

In this problem we have:

$d=0.3 mm = 0.3\cdot 10^{-3} m$ is the distance between the slits

$D=1.5 m$ is the distance of the screen

We also know that the distance between the 3rd and 5th order maximum is 5.5 mm, which means that:

$y_5-y_3 = 5.5 mm = 5.5\cdot 10^{-3} m$

And we can rewrite this as:

$y_5-y_3 = \frac{5\lambda D}{d}-\frac{3\lambda D}{d}=\frac{2\lambda D}{d}$

where we used respectively m=3 and m=5. If we know solve for $\lambda$ , we find the wavelength:

$\lambda = \frac{(y_5-y_3) d}{2 D}=\frac{(5.5\cdot 10^{-3})(0.3\cdot 10^{-3})}{2(1.5)}=5.5 \cdot 10^{-7} m=550 nm$

4 0

2 years ago

Which pair of forces will give a resultant of the least value? (5

kkurt [141]

Answer:

Explanation:

It will give the of 6 which is least of all the other forces.

4.0²+4.0² = c²

$\sqrt{32} = \sqrt{c^{2} }$

6 = c

3 0

3 years ago

The fine horizontal scratches etched onto a bullet after it has been fired are called?

GalinKa [24]

The fine horizontal scratches etched onto a bullet after it has been fired are called Striations.

<h3>What is Striations?</h3>

Striations are the minute differences in the curve of the bullet's surface. The bullet and the gun barrel are the harder and softer materials, respectively, in firearms evidence.
The striations left on the fired bullet are used as a comparison by firearm examiners.
When a gun is discharged, the bullet blasts down the barrel where it strikes ridges and grooves, spinning and improving shot accuracy.
These ridges cause striations in the bullet's soft metal by digging into it.
An examiner analyses these distinctive markings to verify whether a given bullet was shot from a specific firearm.
A barrel will produce individual markings in addition to a bullet's land and groove impressions as the projectile passes through.

Learn more about Bullet here:

brainly.com/question/6669700

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1 year ago

Which letter explains why no machine is 100 percent efficient.

kondaur [170]

Answer:

Explanation:

Think about rubbing your hands together- the friciton produces heat

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1 year ago

a physics student throws a stone horizontally off a cliff. one second later, he throws a second identical stone in exactly the s

Virty [35]

The second stone hits the ground exactly one second after the first.

The distance traveled by each stone down the cliff is calculated using second kinematic equation;

$h = v_0_yt + \frac{1}{2} gt^2$

where;

<em>t is the time of motion </em>
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$h = \frac{1}{2} gt^2$

The time taken by the first stone to hit the ground is calculated as;

$t_1 = \sqrt{\frac{2h}{g} }$

When compared to the first stone, the time taken by the second stone to hit the ground after 1 second it was released is calculated as

$t_2 = \sqrt{\frac{2h}{g} } + 1$

$t_2 = t_1 + 1$

Thus, we can conclude that the second stone hits the ground exactly one second after the first.

"<em>Your question is not complete, it seems be missing the following information;"</em>

A. The second stone hits the ground exactly one second after the first.

B. The second stone hits the ground less than one second after the first

C. The second stone hits the ground more than one second after the first.

D. The second stone hits the ground at the same time as the first.

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2 years ago