Answer:
Explanation:
M(a+g)
The force acting on the top box by the bottom box both having a mass of m stacked in an elevator moving upward with an acceleration of a is,
m(a +g).
What is force?Force is an external factor acting on a body to change it from the state of motion or rest. There are different types of forces such as gravitational force, nuclear force, tension force etc.
Newton's second law states that the force acting on a moving body is the product of its mass and acceleration. If the body of mass m is moving upward with an acceleration a, the force F will be equal to ma.
If the body moves downwards, then the net acceleration is the gravity g that is 9.8 m/s².
Here, both the boxes are moving upward and experience an acceleration a. The force exerted by the box at the bottom is with the acceleration g.
Thus ,the net force experienced by the box at the top by the box at the bottom is equal to F= m (a + g) .
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HELPP EARTH SCIENCE PLS!! And thank you.
Answer:
a
Explanation:
HELP ME NO BOTS PLEASE!!!!!!!
Answer: A red light is reflected
Explanation:
A block attached to a string moves in a circle as shown above.
Which of the arrows in the illustration above best shows the direction of the tangential velocity the object will have if it is released from the string?
Is it possible to stop time
Answer:
NO
Explanation:
NO ES POSIBLE
Lichens are not single organisms, but algae and fungi that function together. The algae use photosynthesis to make food for both organisms. The fungi produce digestive chemicals and absorb nutrients for both organisms.
How does the biological activity of lichens cause weathering in rocks?
Answer options with 4 options
A.
Lichens cause friction as they grow, which weathers the rocks.
B.
Lichens produce chemicals, which dissolve and weather the rocks.
C.
Lichens take in water, which freezes in cracks and weathers the rocks.
D.
Lichens absorb heat during photosynthesis, which weathers the rocks.
Answer:
B
Explanation:
Lichens also have significant impact in the chemical weathering of rocks by the excretion of various organic acids, particularly oxalic acid, which can effectively dissolve minerals and chelate metallic cations.
what is the scientific name for light bending when it strikes certain objects?
Answer:
refraction!
Explanation:
it's the bending of light. it makes it possible for us us have lenses, magnifying glasses, rainbows and other stuff
5. (01.02 LC) What does the mass of an object depend on? (4 points) Force of gravity Temperature of the object Time taken for an event to occur Amount of matter that makes up the object
Answer:
Amount of matter that makes up the object
Explanation:
mass doesn't depend on gravity because is refers to the matter in an object
How far has a dolphin traveled in kilometers if it swims for 1.8 h at 5.6 km/h ?
Answer:
distance = 6.26342 miles
Explanation:
I NEED ANSWERS ASAP!!!! Which of the following would accelerate faster with the same amount of force?
150 pound person on a skateboard
200 pound person on a skateboard
They all accelerate equally
300 pound person on a skateboard
150 pound person on a skateboard
The 150-pound person on a skateboard would accelerate faster with the same amount of force. Therefore, option (A) is correct.
What is acceleration?Acceleration of a body is demonstrated as the change of velocity with respect to time. The acceleration is a vector parameter as it carries both magnitude and direction. Acceleration is defined as the 2nd derivative of position w.r.t. time and the 1st derivative of velocity w.r.t. time.
According to Newton's 2nd law, the force is equal to the multiplication of the mass and acceleration of an object.
F = ma
and, a ∝ 1/m
From the above equation, we can say that acceleration (a) is inversely proportional to the mass (m) of the body.
In the given option the person with a mass of 150 pounds will accelerate faster with the same amount of force and the person with a mass of 300 pounds will accelerate the least.
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You have to make it balanced.
[tex]▪▪▪▪▪▪▪▪▪▪▪▪▪ {\huge\mathfrak{Answer}}▪▪▪▪▪▪▪▪▪▪▪▪▪▪[/tex]
The Balanced chemical equation for the given reaction will be ~
[tex] \large \mathrm{\boxed{ \boxed{4\: Na + O_2} \rightarrow \boxed{ 2\;Na_2O}}}[/tex]
What can be measured by acceleration? A. How much an object slows down B. How much an object speeds up C. If an object changes direction D. All of the above
Answer:
B
Explanation:
When you hear accelerate, it means to speed up. so, the correct answer would be B.
Types of Bone Tissue
or
There are two types of bone tissue: compact and cancellous
have many
haversian systems that are cylinder-shaped units that run
lengthwise through the bone. They make up about 80% of
the bones in your body.
makes up the other 20 percent of the
human skeleton; this type of bone does not have any
osteons. Instead, there are minute branches
called
that crisscross one another.
• Cancellous bone is found in the
(the
rounded ends of a long bone).
• When a bone is broken, blood will pool around the site of
the injury. This is called a
In the next
stage of healing, a
is formed. It is made up
of osteoblasts, cartilage, phosphorus and calcium. As
ossification occurs at the site of the injury, a
is formed. The original bone shape is restored in the process
of
Remodeling
Compact
Epiphyses
Soft Callus
Hematoma
Cancellous
Osteons
Hard Callus
Trabeculae
ET
Answer:
Search it up in the internet UwU
Explanation:
In the game of shuffleboard, you push plastic disks forward and then release them so that they slide across a level playing surface. Once you release a disk, you are no longer pushing and it gradually skids to a stop. Its final position determines your score. As each disk skids to a stop, what becomes of the kinetic energy it had when you released it
Answer:
I believe it would then become potential energy.
Explanation:
easy one giving brainly if correct
Answer:
c) Liquid
Explanation:
Liquid takes the shape of its container and has a specific volume. On the other hand, solid and gas don't.
Explain how a book can have energy even if it is not moving.
Answer:
A World Civilization book at rest on the top shelf of a locker possesses mechanical energy due to its vertical position above the ground (gravitational potential energy).
Answer with full steps please!
Answer:
B
Explanation:
Because B/5
if i'm wrong sorry but i hope it's help^^
when a force is applied to an object the work done is:
Answer:
Explanation: When a force is applied on an object, the work done is the product of the applied force and the displacement produced(distance moved) by the force...
Work=ForceXDisplacement
A baseball is thrown at 50 m/s horizontally from a height of 3 m. How far will the ball travel before it reaches the ground?
Answer:
Approximately [tex]39 \; \rm m[/tex], assuming that the gravitational field strength is [tex]g = 9.81\; \rm m\cdot s^{-2}[/tex] and that the air resistance on this baseball is negligible.
Explanation:
Start by finding the duration [tex]t[/tex] of the flight of this baseball.
The SUVAT equation [tex]h = (1/2)\, g\, t^{2} + v_{0} \, t[/tex] relates [tex]t[/tex] to initial height [tex]h[/tex], initial vertical velocity [tex]v_{0}[/tex], and gravitational acceleration [tex]g[/tex]. (This equation applies only if the air resistance on the baseball is negligible.)
The initial vertical velocity of this baseball would be [tex]v_{0} = 0\; \rm m\cdot s^{-1}[/tex] since this ball was thrown horizontally. The equation becomes:
[tex]\begin{aligned}h &= \frac{1}{2}\, g\, t^{2} + v_{0} \, t \\ &= \frac{1}{2}\, g\, t^{2}\end{aligned}[/tex].
Rearrange and solve for [tex]t[/tex]:
[tex]\begin{aligned}t^{2} &= \frac{2\, h}{g} \end{aligned}[/tex].
[tex]\begin{aligned}t &= \sqrt{\frac{2\, h}{g}} && (\text{$t \ge 0$)} \end{aligned}[/tex].
(So is the case for other free fall motions where the initial vertical velocity is [tex]0[/tex].)
Substitute in [tex]g = 9.81\; \rm m\cdot s^{-2}[/tex] and the initial height of the baseball [tex]h = 3\; \rm m[/tex]:
[tex]\begin{aligned}t &= \sqrt{\frac{2\, h}{g}} \\ &= \sqrt{\frac{3\; \rm m}{9.81\; \rm m\cdot s^{-2}}} \\ &\approx 0.782\; \rm s\end{aligned}[/tex].
In other words, the baseball would have flown for approximately [tex]0.782\; \rm s[/tex] before landing. If there is no air resistance on this baseball, the horizontal velocity of this baseball would be constant ([tex]50\; \rm m\cdot s^{-1}[/tex] until the ball lands.) This baseball would have travelled a horizontal distance of approximately:
[tex]50\; \rm m \cdot s^{-1} \times 0.782\; \rm s \approx 39\; \rm m[/tex].
7. A parachutist jumps from a plane and reaches a terminal velocity of 45.0 m/s. Once he
opens his parachute, he slows to 5.0 m/s it a span of 20 s. What was his rate of
deceleration?
(45. 0 m/s) - (5.0 m/s) ÷ 20
40 m/s ÷ 20 s = 2 meter second minus 2.
I am sry if my ans is wrong
The kinetic energy of an object is 550 J when it is moving at a velocity of 10 m/s. What is the object’s mass?
Answer:
11 kg
Explanation:
Let's start by the definition of kinetic energy, that is [tex]K = {1\over2} m v^2[/tex], let's replace what we have and solve for what's left.
[tex]550 = {1\over2}\cdot m \cdot 10^2[/tex]
[tex]m = {550\cdot 2 \over 100} = 11 kg[/tex]
A small insect smashes into the windshield of your car while you are zooming down the interstate. Which exerts the larger force; the bug on the car or the car on the bug?
Force is directly proportional to the mass of the body. The small insects weight so small thus the force exerted by the insect will be smaller. Thus the force exerted by the car is greater.
What is force?Force is an external agent acts on a body to change it from the state of rest or motion. Various kinds of forces include magnetic force, frictional force, nuclear force, gravitational force etc.
In physics, force is the product of mass and the acceleration. Thus force has the expression F = ma. Therefore, the force exerted from a massive body is greater than the force exerted from a lighter body.
The car is very large in comparison to the insect and it weighs a lot where, the weight of the insect and the force exerted by it is negligible. Hence, the force exerted by the massive body that is car is larger than that by the small insect.
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PLEASE ANSWER NEED HELP!!!!!!!! PLEASE THE CORRECT ANSWER!!!!!!
Ancient Greek history shows that winning at any cost was always the goal of sports.
A.
True
B.
False
PLEASE NO LINKS
Answer:
B.false
Explanation:
wining does not only depends on scoring a goal no
Ancient Greek history shows that winning at any cost was always the goal of sports. the statement is false.
what is goal ?Goal can be defined as something where an individual or a group of individual aim to achieve something, they might make an envision, plan and commit to achieve a desired objective within a finite time by setting deadlines.
goal can be denoted as an anticipated result that motivates a person to direct his/ her effort where the Persistence and patience are two important qualities to achieve one’s goals.
Goals van be specific, close-ended quantifiable objectives with a limited time period or achieving them, it can help to concentrate energy by defining what needs to be done and setting reasonable time limits for it,
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how much heat energy is needed to raise the temperature of 50g of lead by 4.0°c
Explanation:
h=mcƦ
=50×0.129×4
=25.8j
An arrow is launched from a bow with an initial horizontal velocity of 40
m/s and an initial vertical velocity of 62 m/s. What is the total initial vector
velocity of the arrow?
Answer:
V = (Vx^2 + Vy^2)^1/2 = (40^2 + 62^2)^1/2
V = 73.8 m/s
tan theta = Vy / Vx = 62/40 = 1.55
theta = 57.2 deg
Describe the effects of the unbalanced forces on each of these objects.
- A bicycle is moving in a straight line. There is an unbalanced force
opposite to the direction the bicycle is moving.
- A car is moving in a straight line. There is an unbalanced force in
the same direction as the car is moving.
- A ball is moving in a straight line. There is an unbalanced force
sideways to the direction the ball is moving.
Answer:
The unblanced force will start to pull the bicycle backward
The car will move faster in the direction that it is moveing
The ball will move off course sideways
Explanation:
The force will cause the motion in an object. The effects of the unbalanced forces on each of these objects can be,
A bicycle will move backward.A car will move in the same direction.A ball will have sideways due to unbalanced force.What is Unbalanced Force?Unbalanced force is defined as the forces which are not equal in magnitude. When two forces with different magnitudes are applied on an object from opposite directions, the object will start moving in the direction of the net force.
These forces result in the motion of an object.
Balanced forces are the forces which are equal in magnitude. When two forces with equal magnitude are applied on an object from opposite directions, the object will not start moving.
These forces does not result in the motion of an object.
Hence, this force will cause the motion in an object.
The effects of the unbalanced forces on each of these objects can be,
A bicycle is moving in a straight line. There is an unbalanced force in the opposite direction and the bicycle will move backward.A car is moving in a straight line. There is an unbalanced force in the same direction as the car is moving in the same direction.A ball is moving in a straight line. There is an unbalanced force sideways to the direction the ball is also moving in sideways.Learn more about Unbalanced force,
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3. What type of potential energy does a stretched rubber band have?
Answer:
Elastic Potential Energy because a rubber band that is stretched has elastic potential energy, because when released, the rubber band will spring back toward its resting state, transferring the potential energy to kinetic energy in the process.
Explanation:
to break the sound barrier, an airplane must travel faster than the speed of sound. approximately how fast does an airplane have to go to do this?
Answer:
~343 m/s
Explanation:
Because that is the speed of sound in dry air.
A 60 kg mass accelerates at 2 m/s2. What is the net force acting on it?
Answer:
120 newtons i think f=ma
Explanation:
In each cylinder, draw the piston and the gas particles based on the temperature shown.
Is my girl pretty 〖〗Fonts for iPhone & Android - www.fontskeyboard.com/share( ˘ ³˘)♥︎༼ つ ◕◡◕ ༽つ
Answer:
your girl is very very very very very very very pretty
Answer:
very very pretty
Explanation:
