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Mkey [24]
2 years ago
14

Determine the value of the force exerted by the surface (normal force) on a

Physics
1 answer:
Advocard [28]2 years ago
8 0

Answer:

53.5 N

Explanation:

Vertical component of the F force   50 sin30    = 25 N  upward

   force of gravity = m g = 8 * 9.81 =78.5 N Downward

NET downward force by block on table = net upward force exerted by table =  78.5 -25 =53.5 N

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Assume that you have a camera with a resolution of 5MP where the camera sensor is square shaped with awidth of 14mm. It is also
bonufazy [111]

Answer:

The field of view = 66.84°

Explanation:

given:

focal lenght = 15mm

width = 14mm

resolution = 5MP

for us to determine the image size of the square lens of width 14mm

we use Pythagoras theorem,

(diagonal)² = (14)² + (14)²

diagonal = √(392)

the diagonal of the squared camera sensor is the image size in vertical and horizontal.

hence,

image size = √(392) = 19.8mm

Since,

Field of view, fov = 2*arctan(image size/(focal lenght *2))

fov = 2*arctan(19.8/(15 x 2)) = 2*33.425

fov = 66.84°

3 0
3 years ago
You use sunglasses to reduce the glare of the sun when you go outside. You are taking advantages of light’s ability to do which
patriot [66]
 to polarize the sun brightness
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3 years ago
Salt is dissolved in a flask of tap water . Distilling the mixture causes the salt to separate from the water. Which type of ene
algol [13]
I think it’s kinetic energy
3 0
3 years ago
Calculate the normal force, N, acting on a rider in an elevator if his mass is m=72.1 kg and the acceleration due to gravity g=
sleet_krkn [62]

Answer:

Normal force,  F_{N} = 707 N

Given:

Mass of the rider, M = 72.1 kg

acceleration due ti gravity, g = 9.8 m/s^{2}

Velocity of the elevator is constant

Solution:

Since, the elevator is moving with a constant velocity, therefore, the frame we are dealing with is an inertial frame and will not allow any pseudo force to act on it.

The Normal force, N will now be equal to the weight, W of the body which is the product of its mass and the acceleration acting on the body due to gravity and is given by:

F_{N} = W = M\times g

putting the values in the above formula

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4 0
2 years ago
The nuclear mass of 48ti is 47.9359 amu. calculate the binding energy per nucleon for 48ti.
Mars2501 [29]
E/Nucleon = mc^2

Where
m= number of protons*mass of a proton+Number of neutrons*mass of a neutron

For 48Ti, Protons = 22, Neutrons = 26. Protons and Neutrons weigh almost equal at 1.673*10^-27 kg
While 1 amu = 1.661*10^-27 kg

Therefore,
m= {(22+26)*1.673*10^-27}-{47.9359*1.661*10^-27} = 6.8247*10^-28 kg
c= speed of light = 3*10^8 m/s

Then,
Binding energy per nucleon = {6.8247*10^-28*(3*10^8)^2}/48 = 1.28*10^-12 J
4 0
3 years ago
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