PHYSICS HIGH SCHOOL

Can any kind soul help me please​
Can any kind soul help me please​ - 1

Answers

Answer 1
Answer:

Explanation:

Hey there!

Given;

Mass of the Earth (M) = 6.0*10^24kg.

Radius of Earth (R) = 6400km = 6400*1000= 6.4*10^6.

Gravitational constant (G) = 6.67*10^-11Nm^2/kg^2.

Height from surface of Earth (h) = 350km= 3.5*10^5m

Gravity (g) = ?

We have;

g = \frac{G.M}{ {(R + h)}^(2) }

Where "G" is gravitational constant, "M" is mass of earth, "g" is acceleration due to gravity, "h" height from surface of Earth.

Keep all values.

g = \frac{6.67 * {10}^( - 11) * 6.0 * {10}^(24) }{ (6.4 * {10}^(6) + 3.5 * {10}^(5) )^2}

or \: g = \frac{40.002* {10}^(13) }{ (6.4* {10}^(6) + 3.5*10^5)^2}

g=8.7m/s^2

Therefore,gravityfromdistance350kmabove theEarth'ssurfaceis8.7m/s^2.

Hopeithelps...

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radiation in the ultraviolet region of the electromagnetic spectrum is quite energetic. it is this radiation that causes dyes to fade and your skin to develop a sunburn. if you are bombarded with 1.00 mol of photons with a wavelength of 370. nm, what amount of energy, in kilojoules per mole of photons, are you being subjected to?

Which air mass would produce warm, dry weather in the summer

Answers

Answer - Continental Tropical

Reason - Reason for answer is it has hot air mass cycling during the summer with low dew point to hot and high in afternoon

Continental Tropical

  • Continental air masses form over land and are usually dry. Continental air masses are characterized by dry air near the surface while maritime air masses are moist.

Ronnie kicks a playground ball with an initial velocity of 16 m/s at an angle of 40° relative to the ground. What is the approximate horizontal component of the initial velocity?

Answers

The horizontal component is calculated as:
Vhorizontal = V · cos(angle)

In your case Vhoriontal = 16 · cos(40) = 12.3 m/s

Answer: 12.3 m/s

The approximate horizontal component of the initial velocity is 12.3 m/s

What is projectile?

When an object is thrown at an angle from the horizontal direction, the object is said to be in projectile motion. The object which follows the projectile motion.

Given is Ronnie kicks a playground ball with an initial velocity of 16 m/s at an angle of 40° relative to the ground.

The horizontal component of the projectile is  

Vx= V cosθ

Substitute the values, we get

Vx  = 16 cos(40) =

Vx =12.3 m/s

Thus, approximate horizontal component of the initial velocity is 12.3 m/s.

Learn more about projectile.

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The wave function for a traveling wave on a taut string is (in si units) y(x,t) = 0.340 sin 15πt − 4πx + π 4 (a) what are the speed and direction of travel of the wave? g

Answers

Answer:

Explanation:

Given the wave function

y(x,t) = 0.340 sin (15πt − 4πx + π/4)

Generally a wave function is of the form

y(x, t) = A•Sin(wt - kx + θ)

Where

A is amplitude

w is angular frequency

θ is the phase angle

k is the wave number.

Then, comparing this with given wave function

k = 4π, w = 15π and θ = π/4

Speed and direction?

The speed of a wave function can be determined using wave equation

v = fλ

w = 2πf

Then, f = w/2π = 15π/2π = 7.5Hz

Also k = 2π/λ

Then, λ = 2π/k = 2π/4π = 0.5 m

Then,

v = fλ = 7.5 × 0.5

v = 3.75m/s

Direction

Since the time and distance coefficient have opposite sign, for an increasing time interval, the translation will have to increase in the positive direction to nullify the change and maintain the phase. Hence, the wave is traveling in the positive x direction

Which term defines the process of a wave bending as it enters a new medium?A. reflection
B. refraction
C. destructive bending
D. constructive bending

Answers

The term that defines the process of a wave bending as it enters a new medium is called B. REFRACTION

Refraction is the bending of a wave when it enters a medium where its speed is different. This phenomenon is explained by the conservation of energy and conservation of momentum.

Law of Conservation of energy states the total energy of an isolated system remains constant.

law of conservation of momentum states that in a closed system the total momentum is constant.

In refraction, when a medium changes, the phase velocity also changes but its frequency does not; it remains constant.



Solve the following automotive-services problem.Voltage = 220 v
Current = 4 amps
Resistance =

Answers

Explanation:

Given that,

Voltage, V = 220 V

Current, I = 4 A

We have to find the resistance of the appliance.

Ohm's law gives the relation between the current, resistance and the voltage.

V = I R, R = resistance

So, R=(V)/(I)

R=(220\ V)/(4\ A)

R=55\ \Omega

Resistance of the appliance is  55\ \Omega.

Hence, this is the required solution.

Resistance = (voltage) / (current)

                     = (220 V) / (4 A)  =  55 ohms .

(Where exactly do you use 220 V in your car ? ! ?)

If ∠G=30degrees, g=3, k=4 what is the approximate value of h?2.2 or 4.7

4.7

5.7

Answers

Without a picture of the situation, we don't know the relationship
between angle-G,  g,  k, and 'h'.  We don't even know for sure
whether 'h' is on the same planet as the other things.  No answer
is possible without seeing the picture.
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