3 years ago

Someone help me with this ASAP!!

Physics

2 answers:

docker41 [41]3 years ago

8 0

It does help in protecting us from sun rays so it is a

alexandr402 [8]3 years ago

3 0

It protects us from the sun so the answer would be A

You might be interested in

A crate rests on the flatbed of a truck that is initially traveling at 15 m/s on a level road. The driver applies the brakes and

lina2011 [118]

Answer:0.3

Explanation:

Given

velocity of car=15 m/s

truck brought to halt in a distance of 38 m

We know

$v^2-u^2=2as$

Final velocity (v)=0

$0-(15)^2=2(a)(38)$

$a=\frac{-225}{76}$

$a=-2.96 m/s^2$ (deceleration)

Therefore minimum coefficient of friction \mu will be

$\mu \times g=a$

$\mu =\frac{a}{g}$

$\mu =\frac{2.96}{9.8}=0.302$

7 0

3 years ago

Calculate the energy and power required for a student to bike their way to college from home. The student bikes from home for 0.

gregori [183]

Answer:

Check the explanation

Explanation:

To solve the problem, we need to analyze all forces acting on a bicycle individually. In question, student bikes on flat terrain so gravity force doesn't affect the road load. This is the case of uniform acceleration and deceleration so need to calculate average velocity to find Air resistance.

Kindly check the attached images below to see the step by step explanation to the question above.

8 0

3 years ago

Suppose that a particular artillery piece has a range R = 9880 yards . Find its range in miles. Use the facts that 1mile=5280ft

Solnce55 [7]

Answer:

R = 9880 yd * 3 ft/yd / 5280 ft/mi = 5.61 mi

If you do it in steps

R = 9880 yd * 3 ft/yd = 29640 ft

R = 29640 ft / 5280 ft/mi = 5.61 mi

6 0

3 years ago

Suppose a vector v makes an angle theta with respect to the y axis, what could be the x and y components of the vector v

gtnhenbr [62]

If the angle between the vector and the y-axis is Θ ,
then the y-component of the vector is

(length of the vector) times cosine( Θ ),

and the x-component of the vector is

(length of the vector) times sine( Θ ) .

8 0

3 years ago

Which undergoes a faster rate of cooling: a red-hot poker in a warm oven or a red-hot poker in a cold room? (or do both cool at

NARA [144]

A red hot poker in a cold room would cool faster

3 0

3 years ago