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3 years ago

Name the process scientists use to gain knowledge about the physical world

Physics

2 answers:

saveliy_v [14]3 years ago

7 0

The answer would be the Scientific Method.

Leya [2.2K]3 years ago

4 0

It would be Scientic Method

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A plane flies 125 km/hr at 25 degrees north of east with a wind speed of 36 km/hr at 6 degrees south of east. What is the result

nasty-shy [4]

Answer:

V = 156.85 Km/h

Explanation:

Speed of plane = 125 Km/h

angle of plane= 25° N of E

Speed of wind = 36 Km/h

angle of plane = 6° S of W

Horizontal component of the velocity

V_x = 125 cos 25° + 36 cos 6°

V_x = 149 Km/h

Vertical component of the velocity

V_y = 125 sin 25° - 36 sin 6°

V_y = 49 Km/h

Resultant of Velocity

$V = \sqrt{V_x^2 + V_y^2}$

$V = \sqrt{149^2 + 49^2}$

V = 156.85 Km/h

the resulting velocity of the plane is equal to V = 156.85 Km/h

5 0

3 years ago

FORMULA PLEASE AND explINATION

Alex_Xolod [135]

2 Newtons to the right.

3 newtons are needed to over come the friction. There are 2 left over.

So the answer is 2 newtons to the right.

5 - 3 = 2

7 0

3 years ago

You are driving your car along a country road at a speed of 27.0 m/s. as you come over the crest of a hill, you notice a farm tr

Bezzdna [24]

speed of the car = 27 m/s

speed of truck ahead = 10 m/s

relative speed of car with respect to truck

$v_r = 27 - 10 = 17 m/s$

relative deceleration of car

$a_r = -7 m/s^2$

now the distance before they stop with respect to each other is given by

$v_f^2 - v_i^2 = 2 a d$

$0 - 17^2 = 2 *(-7)*d$

$d = 20.6 m$

so it will come at the same speed of truck after 20.6 m distance and hence it will not hit the truck as the distance of the truck is 25 m from car

Part b)

Distance traveled by car before it stops is given by

$v_f^2 - v_i^2 = 2 a s$

$0^2 - 27^2 = 2 * (-7)* s$

$s = 52.1 m$

so it will stop after it will cover total 52.1 m distance

Part c)

time taken by the car to stop

$v_f - v_i = at$

$0 - 27 = (-7) * t$

$t = 3.86 s$

now the distance covered by truck in same time

$d = 3.86 * 10 = 38.6 m$

now after the car will stop its distance from the truck is

$D = 25 + 38.6 - 52.1 = 11.5 m$

<em>so the distance between them is 11.5 m</em>

6 0

3 years ago

A well-known transform boundary found in California is the _____. San Francisco fault, San Andreas fault, San Diego fault, OR Sa

Trava [24]

San Andreas fault is the answer

7 0

3 years ago

Read 2 more answers

Geothermal pumps can be used for cooling, but not heating. true or false?

Ede4ka [16]

Answer:

False

Explanation:

Geothermal pumps can be used for cooling and heating.

4 0

3 years ago