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
34kurt
3 years ago
6

Convection is thermal energy transferred (5 points) A only by moving air currents B only by moving liquids C by either moving li

quids or moving air currents D without moving anything\
Physics
1 answer:
ZanzabumX [31]3 years ago
5 0
The answer is A. only by moving air currents. 
You might be interested in
Choose all the answers that apply.
Serhud [2]
<span>According to Newton's first law of motion:

-- objects at rest will remain at rest unless acted upon by an outside force

-- objects in motion will remain in motion unless acted upon by an outside force


</span>
8 0
3 years ago
A train slows down as it rounds a sharp horizontal turn, going from 94.0 km/h to 46.0 km/h in the 17.0 s that it takes to round
Svetllana [295]

Answer:

1.41 m/s^2

Explanation:

First of all, let's convert the two speeds from km/h to m/s:

u = 94.0 km/h \cdot \frac{1000 m/km}{3600 s/h} = 26.1 m/s

v=46.0 km/h \cdot \frac{1000 m/km}{3600 s/h}=12.8 m/s

Now we find the centripetal acceleration which is given by

a_c=\frac{v^2}{r}

where

v = 12.8 m/s is the speed

r = 140 m is the radius of the curve

Substituting values, we find

a_c=\frac{(12.8 m/s)^2}{140 m}=1.17 m/s^2

we also have a tangential acceleration, which is given by

a_t = \frac{v-u}{t}

where

t = 17.0 s

Substituting values,

a_t=\frac{12.8 m/s-26.1 m/s}{17.0 s}=-0.78 m/s^2

The two components of the acceleration are perpendicular to each other, so we can find the resultant acceleration by using Pythagorean theorem:

a=\sqrt{a_c^2+a_t^2}=\sqrt{(1.17 m/s^2)+(-0.78 m/s^2)}=1.41 m/s^2

6 0
3 years ago
Read 2 more answers
Ninais ba ni floranteng mapalapit ang kanyang loob kay adolfo
luda_lava [24]

Answer:

?

Explanation:

8 0
2 years ago
Which statement best describes a characteristic of gases?
salantis [7]
Assumes the shape and volume of its container 
<span>particles can move past one another</span>
8 0
3 years ago
A skydiver falls toward the ground at a constant velocity. Which statement best applies Newton’s laws of motion to explain the s
vlabodo [156]

Answer:

The answer is (a.) An upward force balances the downward force gravity on the skydiver

The skydiver is falling at a constant velocity because the upward force is balancing the downward force of gravity. According to Newton, the opposite force balance each other. This is stated in Newton's second law of motion.

8 0
3 years ago
Read 2 more answers
Other questions:
  • To calculate the heat needed to melt a block of ice at its melting point what do you need to know
    8·1 answer
  • A cheetah can run at approximately 100 km/hr and a gazelle at 80 km/hr. If both animals are running at full speed, with a gazell
    8·1 answer
  • Drag and drop each description into the correct category
    6·1 answer
  • Superman can leap over tall buildings in a single bound. What does he do to the ground beneath him? Assume his mass is 100.0 ± 0
    5·1 answer
  • The planet zeta has 2 times the gravitational field strength and sane mass as the earth , how does the radius of zeta compare wi
    15·1 answer
  • Which of newtons laws does F=MA represent
    11·2 answers
  • Which statements best describe measuring with a graduated cylinder? all that apply.
    14·2 answers
  • Using the periodic table, predict the formulas of stable ionic compounds. Select THREE that are correct.
    13·2 answers
  • A motor is used to lift a 10 kg mass 2 m above the ground in 4 s. If the power input to the motor is 100 W. what is the efficien
    7·1 answer
  • The wind exerts a force of 425 N to the north on a sailboat, while the water exerts a drag force of 325N in the opposite directi
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!