Answers
Answer:
The answer is C
Pls mark as brainliest
Related Questions
what are electromagnetic waves?
a) things like longitudinal waves
b) ocean waves
c) sound waves
d) electric magnetic fields that travel through a space very quickly
Answers
sound waves have a frequency of 1000 hz what is their period?
Answers
Answer:
Solve it
Explanation:
The formula for time is: T (period) = 1 / f (frequency). λ = c / f = wave speed c (m/s) / frequency f (Hz). The unit hertz (Hz) was once called cps = cycles per second.
A skydiver of mass mmm jumps from a hot air balloon and falls a distance ddd before reaching a terminal velocity of magnitude vvv. Assume that the magnitude of the acceleration due to gravity is g.
Required:
Find the power Pd supplied by the drag force after the skydiver has reached terminal velocity v. (in same terms)
Answers
Answer:
Explanation:
When the object falling attains terminal velocity , net force on it becomes zero. That means drag force becomes equal and opposite to its weight.
So drag force = mg
where m is mass of falling body and g is acceleration due to gravity .
The drag force is constant . It is doing work against the weight of falling body . Object is falling v m /s . That means drag force is doing work per second as follows
Work done per second = force x displacement per second
= mg x v
So
Power of drag force = mgv.
Pd = mgv.
Free falling objects accelerate at 9.8 m/s because the force of
acts on them.
speed
gravity
magnitude
motion
Answers
B. Gravity
At which position is the LOWEST potential energy?
Answers
Potential Energy is “stored energy.” It is energy that is ready to be converted or released as another type of energy. We most often think of potential energy as gravitational potential energy. When objects are higher up, they are ready to fall back down. When you stretch an object and it has a tendency to return to its original shape, it is said to have elastic potential energy. Chemical potential energy is the stored energy in a substance’s chemical structure that can be released in a chemical reaction or as heat.
2) Describe the qualities and the location of supergiant stars based on the H-R diagram.
Answers
Answer:
55
Explanation:
A car is left overnight in a parking lot. What is its instantaneous speed at 12:01 a.m.?
Answers
Answer:
0 mph
Explanation:
Answer:
0 mph
Explanation:
25%of what number is 21? Explain
Answers
Answer:
84
Explanation:
First convert
25
%
to its decimal number.
25
%
=
25
100
=
1
4
=
0.25
25
%
"of" a number means to multiply
25
%
by that number. Let
x
be the number.
0.25
x
=
21
Divide both sides by
0.25
.
0.25
1
0.25
1
x
=
21
0.25
Simplify.
x
=
84
constellation *
a.) the hunter
b.) Pole Star
c.) little bear
d.) pattern of stars
e.) nearest star
Answers
Answer:
D
Explanation:
a group of stars forming a recognizable pattern that is traditionally named after its apparent form or identified with a mythological figure.
I hope this helps a bit.
The recoil of a cannon is probably familiar to anyone who has watched pirate movies. This is a classic problem in momentum conservation. Consider a wheeled, 500 kg cannon firing a 2 kg cannonball horizontally from a ship. The ball leaves the cannon traveling at 200 m/s. At what speed does the cannon recoil as a result?
Answers
Answer:
0.8 m/s
Explanation:
From the question,
MV = mv............................. Equation 1
Where M = mass of the cannon, m = mass of the cannonball, V = velocity of the cannon, v = velocity of the cannon ball.
make V the subject of the equation
V = mv/M........................ Equation 2
Given: m = 2 kg, M = 500 kg, v = 200 m/s
Substitute these value into equation 2
V = (2×200)/500
V = 400/500
V = 0.8 m/s
How do I solve for the maximum height of someone who jumps straight up leaving the ground at 6.0 m/s.
Answers
Answer: 3.0 m/s
Explanation:
The helium-filled balloons below are carrying negative electric charges, as shown. Attach two of the balloons to the hooks below to show what would happen if a red balloon and a blue balloon were brought near each other. Plzz help
Answers
Answer:
these are in the hooks the balloons repel each other if the hooks are isolated.
Explanation:
In electrostatics, charges of the same sign repel and of a different sign attract each other.
With this explanation we analyze the situation presented, they indicate that the balloons have a negative taste, so when these are in the hooks the balloons repel each other if the hooks are isolated.
If the hooks are connected to Earth, the poop of the balloons is neutralized, so there is neither attraction nor repulsion.
Answer:
Here you go : )
Explanation:
Kara drops a rock from the edge of a cliff and it takes 7.00 s for the rock to reach the ground. What is the cliff’s height?
Answers
Answer:
h = 204.1 m
Explanation:
Given that,
Time taken to reach the ground, t = 7 s
We need to find the height of the cliff. We can find it using second equation of kinematics as follows :
[tex]h=ut+\dfrac{1}{2}at^2[/tex]
Here,
u = 0 (at rest initially)
a = g
So,
[tex]h=\dfrac{1}{2}gt^2\\\\h=\dfrac{1}{2}\times 9.8\times 7^2\\\\h=204.1\ m[/tex]
So, the cliff's height is 204.1 m.
Charges may be transferred by:
A) induction
B) insulation
C) reduction
D) conduction
Answers
Answer:
D) conduction
Explanation:
Why does an iceberg have more HEAT than a cup of coffee.
Answers
Explanation:
Although the iceberg has less internal energy per mass, its enormously greater mass gives it a greater total energy than that in the small cup of coffee
Answer:
The hot coffee has a higher temperature, but not a greater internal energy. Although the iceberg has less internal energy per mass, its enormously greater mass gives it a greater total energy than that in the small cup of coffee.
Explanation:
Which of the following best compares the structures in protists and fungi that allow these organisms to explore their environment. Question 2 options: Protists and fungi move using cilia, flagella, and hyphae. Some protists move using cilia and flagella. Fungi do not move but have fast growing hyphae. Protists move using hyphae. Some fungi move using cilia, and flagella. Neither protists nor fungi have cilia, flagella, and hyphae. They obtain energy only if the food source moves by them.
Answers
Answer:
Some protists move using cilia and flagella. Fungi do not move but have fast growing hyphae.
Explanation:
trust me
Ronaldo runs across a soccer field, moving 10 meters north, then 8 meters west, then 4 meters south. His
displacement would be:
Answers
Answer:
wha is this .....................? same confusion
17. How long does it take a giraffe running at a speed of 33 m/s to run 200 meters !
Answers
Answer:
6600sec
Explanation:
T=sv
T=200m*33m/s
T=6600sec
How do you calculate the average velocity of mercury as it orbits the sun?
Answers
Answer:Hope this helps!!!!!
Explanation:
People are fascinated with high-speed travel. A Boeing 747 flies at about 550 miles per hour. The Concorde Supersonic Transport flew over twice as fast at about 1350 miles per hour. That is impressively fast, but consider the speeds that we passengers on planet Earth always travel. The circumference of the Earth at the equator is 24900 miles and the residents of the tropic areas travel that distance every 24 hours. They are traveling over a thousand miles an hour. At 38° latitude we are traveling about 820 miles per hour. That is quite impressive but it pales in comparison with the orbital speed of the Earth, The average distance of the Earth from sun is 93.5 million miles. This means that in 365.25 days the Earth travels 587.5 million miles. This works out to about 67 thousand miles per hour. This is the speed we travel 24 hours a day, 365.25 days a year.
The orbital velocity is 2πR/T where R is the average radius of the orbit and T is the length of the year. The orbital velocity of a planet relative to that of Earth's is then the relative radius divided by the relative length of the year.
When the Moon passes through Earth's penumbra, it is a:
a.Solar eclipse
b. Penumbral eclipse
c.Total lunar eclipse
d Partial eclipse
Answers
Answer: it is B
Explanation: A penumbral lunar eclipse occurs when the Moon passes through Earth's penumbra. The penumbra causes a subtle dimming of the lunar surface, which is only visible to the naked eye when about 70% of the Moon's diameter has immersed into Earth's penumbra.
describe tension force (FT) in your own words
Answers
Answer In the field of physics, tension is called the force that is exerted by the action of a cable, rope, chain or other similar solid object. ... Since tension is a magnitude of force, it is measured in newtons and is always measured in a direction parallel to the chord on which it is applied.
Explanation:
What is an effect of an object getting wet?
Answers
Answer:
once light hits a wet shirt, that water layer causes less of the blue shirt's blue wavelengths of light to be reflected toward your eyes and more of the blue light to be refracted, or bounce away from you, back into the fabric.
Explanation:
a boy throws a small stone into a pond. waves spread out from where the stone hits the water and travel to the side of the pond. the boy notices that eight waves reach the side of the pond in a time of 5.0 s. what is the frequency of the waves
Answers
Answer: 1.6Hz
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4. A 3000 kg plane has an acceleration of 12 m/s/s on take off. What net force is exerted on the plane?
Answers
Answer: 36000 N
Explanation: I REALLY HOPE THIS HELPS I'M KINDA NEW AT THIS:] :]
Many objects within our solar system remain in constant motion and maintain predictable orbital patterns. What force governs the motion and patterns of objects in our solar system?
Answers
Answer:
Gravitational pull of the sun
Explanation:
PLEASE HELP!
A person is standing on ice. He throws a snowball with a force of 4 N to the right, while the snowball pushes the
person with a force of 4 N to the left. What is the net force on the person?
A) 4 N, left
B) 8N
Answers
Answer:
A) 4n
Explanation:
He throws a snowball with a force of 4 N to the right, while the snowball pushes the person with a force of 4 N to the left. The given scenario is balanced because the same amount of force is acting in both direction.
A vector is 0.888 m long and
points in a 205 degree
direction.
Find the y-component of the
vector.
hing
y-component (m)
Answers
Answer:
182.04
Explanation:
0.888×205=n
that where you the answer
#CarryOnLearning
Continental drift is______?
A:The movement of large land areas across earth's surface
B:The current that pushed Wegners hot air balloon
C:The movement of animals from Africa and South America
Answers
Answer is:
A:The movement of large land areas across earth's surface
A well acts as a closed pipe. When
wind blows across the top, it
creates a fundamental frequency of
30.6 Hz. How deep is the well?
(Speed of sound = 343 m/s)
(Unit = m)
Answers
Answer:2.80 m
Explanation: you would divide 343 by 4 times 30.6
Answer:
2.80
Explanation:
Acellus
What are some indicators of energy transformations?
Answers
Explanation:
Contact, vision, sound, flavor, and smell are all markers of energy transformations. The most basic example would be when we notice something has begun to pass through vision. Whenever an entity accelerates or slows down, energy is constantly transformed.