1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
blsea [12.9K]
3 years ago
6

Imagine that you are driving up a mountain on a very curvy road at night when the air is very still and not moving. The air temp

erature is getting colder and colder as you drive up the mountain. Which of the following best describes what happened to the air temperature?
Physics
1 answer:
timama [110]3 years ago
8 0

Answer:

Diathermy and atmospheric pressure

Explanation:

When the energy from the Sun comes to the Earth, it hits first the atmosphere, but the air contained is almost unaffected by it because the molecules are not tight enough to absorb its incoming energy.

Later on, the sunlight reaches the soil, thus absorbing part of the energy and reflecting the rest. Because of this reflection, the air near to the ground begins to heat through convection and as it gains height the air pressure (thus the air molecules begin to separate more from each other) decreases and the energy transfer to them is more difficult. As a result, as you gain height, the air temperature decreases at a rate of 6.8 ºC every 1,000 meters.

You might be interested in
A 15.0-kg block is dragged over a rough, horizontal surface by a 70.0-N force acting at 20.0° above the horizontal. The block is
Tatiana [17]

Answer:

Explanation:

from the question we are told that

Load L=15kg

ForceF=70N

Angle of inclination =20.0 degres

Displacement m=5 meters

coefficient of kinetic friction \alpha  =0.300

3 0
3 years ago
You want to move a 4- kg bookcase to a different place in the living room. If u push with a force of 65 n and the bookcase accel
IrinaK [193]

Answer:

1.65

Explanation:

The equation of the forces along the horizontal direction is:

F-F_f = ma (1)

where

F = 65 N is the force applied with the push

F_f is the frictional force

m = 4 kg is the mass

a=0.12 m/s^2 is the acceleration

The force of friction can be written as F_f = \mu R (2), where

\mu is the coefficient of kinetic friction

R is the normal force exerted by the floor

The equation of forces along the vertical direction is

R-mg=0 (3)

since the bookcase is in equilibrium. Substituting (2) and (3) into (1), we find

F-\mu mg = ma

And solving for \mu,

\mu = \frac{F-ma}{mg}=\frac{65-(4)(0.12)}{4(9.8)}=1.65

7 0
3 years ago
Two objects have the same velocity. These two objects have different masses. Which object will
kogti [31]

Answer:

The object with the greater mass will have the greater momentum

Explanation:

The momentum of an object with mass <em>m</em>, moving with velocity <em>, </em>is given by the formula

M = <em>mv</em>

<em />

Since both objects have the same velocity <em>v, </em>it is clear that the object with the bigger mass will have the greater momentum

6 0
2 years ago
incline plane is given length 12m,load 600 newton,effort 200 Newton, Height 3 metre find its velocity ratio and mechanical advan
Salsk061 [2.6K]

Answer:

i. The velocity ratio of the plane is 4.

ii. The mechanical advantage of the plane is 3.

Explanation:

i. The velocity ratio (VR) of an inclined plane is ratio of its length to the height. It is given as;

VR = \frac{length of the plane}{height} = \frac{l}{h}

Given: l = 12 m, L = 600 N, E = 200 N, h = 3 m.

So that,

VR = \frac{12}{3}

     = 4

The velocity ratio of the plane is 4.

ii. Mechanical advantage (MA) expresses the relationship between the load overcome to effort applied.

MA = \frac{Load}{Effort} = \frac{L}{E}

      = \frac{600}{200}

      = 3

The mechanical advantage of the plane is 3.

Therefore, the velocity ratio of the inclined plane is 4, and its mechanical advantage is 3.

7 0
3 years ago
Light from the sun reaches earth in about 8.3 minutes the speed of light is 3.00×10^8 m/s what is the distance from the sun to e
Fynjy0 [20]
Set up a unit conversion problem, arrange units to convert minutes to seconds, then cancel all time units.

8.3 minutes x (60 seconds/1 minute) x ( 3.00x10^8 meters/1 second) = 149,400,000,000 meters

Since the time is the term with the fewest number of significant figures (2), your answer should only be expressed with two sig figs as well.

1.5x10^11 m

6 0
4 years ago
Other questions:
  • A bowling ball encounters a 0.760 m vertical rise on the way back to the ball rack, as the drawing illustrates. Ignore frictiona
    14·1 answer
  • An electron is a negatively charged particle that has a charge of magnitude, e - 1.60 x 10-19 C. Which one of the following stat
    15·1 answer
  • What is matterwhat is the definition of matter ​
    13·2 answers
  • An infinitely long wire carrying a 25-A current in a the positive x-direction is places along the xaxis in the vicinity of a 20-
    10·1 answer
  • A chimpanzee sitting against his favorite tree gets up and walks 70.9 m due east and 31.9 m due south to reach a termite mound,
    5·1 answer
  • I NEEDHELP ASAP !!! BEIN TIMED AND I HAVE 5 MINS LEFT AND 8 LEFT TO ANSWER !
    11·1 answer
  • A soccer ball is kicked with a speed of 30.0 m/s at an angle of 49.0 ∘ upward from the ground. What was the ball's speed just be
    7·1 answer
  • A dog wishes to swim across a slow moving stream. The current velocity is 3.0m/s. The distance directly across the stream is 50m
    12·1 answer
  • Which statement best explains the path light takes as it travels? A. Light takes a curved path through matter and takes a straig
    11·2 answers
  • A shield of material that reflects neutrons is placed around a radioactive sample. Which change in the nuclear reaction is most
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!