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3 years ago

Plz help owo

Physics

1 answer:

4vir4ik [10]3 years ago

3 0

Answer:

They are caused by outward fluctuations of the sun's magnetic field.

They tend to occur during active periods of the solar cycle.

Explanation:

While sun spots will appear darker than the surrounding surface, flares will tend to appear brighter. CME's are associated with massive flares.

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A rocket sled accelerates at a rate of 49.0 m/s2 . Its passenger has a mass of 75.0 kg. (a) Calculate the horizontal component o

Katen [24]

Explanation:

It is given that,

Mass of the passenger, m = 75 kg

Acceleration of the rocket, $a=49\ m/s^2$

(a) The horizontal component of the force the seat exerts against his body is given by using Newton's second law of motion as :

F = m a

$F=75\ kg\times 49\ m/s^2$

F = 3675 N

Ratio, $R=\dfrac{F}{W}$

$R=\dfrac{3675}{75\times 9.8}=5$

So, the ratio between the horizontal force and the weight is 5 : 1.

(b) The magnitude of total force the seat exerts against his body is F' i.e.

$F'=\sqrt{F^2+W^2}$

$F'=\sqrt{(3675)^2+(75\times 9.8)^2}$

F' = 3747.7 N

The direction of force is calculated as :

$\theta=tan^{-1}(\dfrac{W}{F})$

$\theta=tan^{-1}(\dfrac{1}{5})$

$\theta=11.3^{\circ}$

Hence, this is the required solution.

8 0

3 years ago

Look at the Sankey diagram for a filament light bulb below. If the bulb is used in a desk lamp, what is the efficiency of the bu

guapka [62]

Answer:

The question does not state how the answer is to be entered. I would use 10% because that is most common.

Explanation:

You are using 300 J of energy to get 30 J of light energy. The fact that you can account for the left over energy is not relevant.

Efficiency = Work Out / Work In

Efficiency = 30 J / 300 J = 0.1

If you need this as a %, you can multiply by 100

Efficiency = 0.1 * 100 = 10%

6 0

2 years ago

How can you convert a temperature expressed in degrees celsius to kelvin?

ozzi

By subtracting the value of absolute zero, also know as adding 273.15!

8 0

4 years ago

Read 2 more answers

A 2000 kg truck is traveling at 25 m/s. Determine the impulse needed

Vitek1552 [10]

Answer:

A 7kg impulse

Explanation:

i think sorry if not

3 0

3 years ago

if a ball is thrown with a velocity of 25 m/s at an angle of 37 degrees above the horizontal,evaluate the projectile for it's ho

agasfer [191]

Answer:100 mph

Explanation:

6 0

3 years ago