Answer:
32.5/s squared
Explanation:
When a basketball player jumps to make a shot, once the feet are off
the floor, the jumper's acceleration
There's no question.I think these are just the answer choices
I need help please
I’ll give BRAINLIST for correct answers!!
Answer:
1. the graph is showing the speed of the object at different times.
Explanation:
2. the object is slowing down
on which temperature scale does the average kinetic energy of molecules double when the temperature doubles?
Answer:
where are the choices i think 100% that is my opinion
What needs to be applied in order to change an object's momentum?
a. kinetic energy
b. impulse force
c. a new velocity
d. it’s mass
Answer:
B
Explanation:
if you want to change an object's momentum you need to apply force to the object
Barnard's star distance from earth in light years
Answer:
5.978 años luz
Explanation:
Hi! Your answer is: The distance between the Barnard's star and Earth is 5.978 light years.
the speed of an object increases by 30 m/s in 10 seconds. what is its acceleration?
Answer:
3m/s^2
Explanation:
acceleration=velocity/time
acceleration= 30/10=3m/s^2
How much neutrons are in the nucleus of an atom with an atomic number of 25
Answer: 13 neutrons
Explanation: They differ only because a 24Mg atom has 12 neutrons in its nucleus and a 25Mg atom has 13 neutrons.
Which best describes why projectiles move in a curved path?
A) They have constant horizontal velocity and vertical acceleration.
B) They have horizontal acceleration and constant vertical velocity.
C) They have horizontal momentum and constant vertical velocity.
D) They have horizontal acceleration and vertical momentum.
Answer:
A. The have horizontal velocity and vertical acceleration.
Explanation:
Projectiles move in a curved path because : ( A ) They have constant horizontal velocity and vertical acceleration
Projectile movementProjectiles move in a curved path due to constant horizontal velocity and vertical acceleration due to gravity that acts on it. Projectile movement starts when an object is thrown/projected into the air. The object thrown into the air will travel in a curved path known as trajectory.
Hence we can conclude that Projectiles move in a curved path because They have constant horizontal velocity and vertical acceleration.
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Placed on the number line, is 1/7 closer to 0, 1/2 or 1?
Answer:
0 as 1/7 = 0.142857143
1/7 = 5/35
We can get this number by 1/7 x 1000 = 1000 / 7
= 142.857143
Then move 3 decimal place.
NEED HELP!!!! 13 POINTS!!!!!!
Exercise builds muscles because it causes them to contract. If this is the case, would massage, which causes them to relax, also be a way of building muscle?
A.
No, massage does not have any health benefits.
B.
Yes, any working with muscles makes them stronger.
C.
Yes, massage begins when the muscles are very tight.
D.
No, the contraction is where building strength comes from.
Answer:
If I were you I'd go with B, it just seems to make the most sense to me out of these options.
a 3000 kg car with a full load of people, has a kinetic energy of 190,000 J. What would the kinetic energy of the car be if it was moving at the same speed but a different mass of 1500 kg?
Answer: 15.9 m/s
Explanation:
KE = 1/2(mv^2)
190,000J = 1/2(3000kg)*v^2
1 J = 1 kg*m^2/s^2
190,000 kg*m^2/s^2 = 1/2(3000kg)*v^2
v^2 = (190,000 kg*m^2/s^2)/(1/2(3000kg))
v^2 = (190,000 kg*m^2/s^2)/(1500kg))
v^2 = 126.6667 m^2/s^2
v = 11.25 mm/s velocity of 3000kg vehicle
With the same kinetic energy, a vehicle of 1500kg would have a different velocity:
190,000 kg*m^2/s^2 = 1/2(1500kg)*v^2
190,000 kg*m^2/s^2 =(750kg)*v^2
v^2 = 253.33 m^2/s^2
v = 15.9 m/s
On a trip you travel at a constant speed of 50 kilometers per hour North for 1 hour. Then you turn West and travel at a constant speed of 40 kilometers per hour for 2 hours. Calculate your velocity for the trip.
43 km per hour
31 km per hour
27 km per hour West + 17 km per hour North
50 km per hour North + 40 km per hour West
Answer::27 km per hour West + 17 km per hour North
Explanation:
:27 km per hour West + 17 km per hour North
he or she is right good jod
The velocity for the trip would be 31 km per hour, therefore the correct answer is option B.
What is displacement?An object's position changes if it moves in relation to a reference frame, such as when a passenger moves to the back of an airplane or a professor moves to the right in relation to a whiteboard. Displacement describes this shift in location.
As given in the problem, on a trip you travel at a constant speed of 50 kilometers per hour North for 1 hour. Then you turn West and travel at a constant speed of 40 kilometers per hour for 2 hours.
The final displacement of the trip = √(50² + 80²)
= 94.34 kilometers
The velocity of the trip = total displacement of the trip / time period
=94.34 kilometers / 3
= 31 kilometers per hour
Thus, the velocity of the trip would be 31 kilometers per hour.
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You push a friends sitting on a swing. If you push with 200N of force and your friend accelerates at a rate of 4 m/s^2. Find the mass of your friend.
e friend sitting on the swing = 50 kg
Rate of acceleration = 4 m/s^2
The above information's are already given in the question. We need to utilize these information's in such a manner that the answer to the question can be determined easily.
We already know that
Force = Mass * acceleration.
This formula has to be used to find the force exerted.
Then
Force exerted = Mass of the friend * Acceleration
= (50 * 4) kg m/s^2
= 200 Newton
So the force exerted by me is 200 Newton. I hope the explanation and the procedure is clear to you and you are satisfied with it.
Three different objects, all with different masses, are initially at rest at the bottom of a set of steps. Each step is of uniform height . The mass of each object is a multiple of the base mass : object 1 has mass 3.10 , object 2 has mass 1.46 , and object 3 has mass . When the objects are at the bottom of the steps, define the total gravitational potential energy of the three-object system to be zero. If the objects are then relocated as shown, what is the new total potential energy of the system? Each answer requires the numerical coefficient to an algebraic expression. Each algebraic expression is given using some combination of the variables , , and , where is the acceleration due to gravity. Enter only the numerical coefficient. (Example: If the answer is 1.23 ,
The definition of gravitational potential energy would gravitate allows to find the answers for the energy of each object on the highest rung of the ladder are:
a) expression for gravitational potential energy is [tex]U_p = m g \ \Delta y[/tex]
b) Energy value
* Body 1 U_p = 82 J
* Body 2 U_p = 38.6 J
* Body 3 18.5 J
The gravitational potential energy is a configuration energy that represents the amount of work that the system can do for a given configuration, its expression is
[tex]U_p = m g \ \Delta y[/tex]
Where [tex]U_p[/tex] is the gravitational potential energy, m the mass of the body and Δy the difference in height.
In this case it indicates that the minimum height is at the bottom and is equal to zero, the steps of a ladder have a height of approximately y = 15 cm = 0.15 m
They indicate the mass of the bodies are m₁ = 3.10 kg, the mass of the body 2 m₂ = 1.46 kg , the mass of the third object is not observed, suppose it is m₃ = 0.7 kg.
They indicate that the body is placed on the last step, suppose it is a standard 18-step ladder, therefore the total height is
y = # _ steps y_each step
y = 18 0.15
y = 2.70 m
the gravitational potential energy to the capacity of the body is
body 1
[tex]U_p[/tex] = m₁ g Δy₁
U_p = 3.10 9.8 (2.70 -0)
U_p = 82 J
body 2
U_p = 1.46 9.8 ( 2.7-0)
U_p = 38.6 J
body 3
U_pUp = 0.70 9.8 (2.7-0)
U_p = 18.5 J
In conclusion, using the definition of gravitational potential energy, we can find the answers for the energy of each object on the highest rung of the ladder are;
a) expression for gravitational potential energy is [tex]U_p = m g \ \Delta y[/tex]
b) Energy value
* Body 1 U_p = 82.0 J
* Body 2 U_p = 38.6 J
* Body 3 U_p = 18.5 J
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Which are examples of chemical weathering? Choose the two correct answers. (1 poir
-rock breaking apart during a rock slide
-an insect digging a hole in rock for its home
-oxidation of certain metals in rock
-an increase in temperature in daytime causing a rock to crack
-acid rain breaking down compounds in rock statues
Oxidation of certain metals in rock and acid rain breaking down compounds in rock statues are examples of chemical weathering.
What is chemical weathering?
When chemicals are diluted and dissolved in water, they seep and percolate down the surfaces of rocks, causing chemical weathering. Chemical weathering occurs in humid tropical regions and other places with high temperatures and a sufficient supply of water.
The reaction of chemicals in water or air causes minerals to change in composition as chemical weathering takes place. Additionally, this causes the breakdown of rocks. Leaching is the process of carrying away some components of rock breakdown through rocks and soil.
These materials may eventually be transported by the water to rivers and the sea. The oceans' saltiness comes from this source. Oxidation, the breakdown of calcium carbonate, and acid rain breaking down compounds in rock statues by chemical reaction are examples of chemical weathering.
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which plane divides the body into right and left halves
according to newton’s second law, if there is a net force, there will be
Answer:
The object will have an acceleration and the object's velocity will change.
Explanation:
If there is a net force acting on an object, the object will have an acceleration and the object's velocity will change. Newton's second law states that for a particular force, the acceleration of an object is proportional to the net force and inversely proportional to the mass of the object.
PLS MARK BRAINLIEST
An individual’s mental predisposition that influences perceptual expectations is one’s perceptual __________. A. bias B. knowledge C. assumption D. set
[tex]▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ { \huge \mathfrak{Answer}}▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ [/tex]
The Correct choice is D
An individual’s mental predisposition that influences perceptual expectations is one’s perceptual set .
4. Make new charts for each of the following scenarios. Predict what you think the graphs will
look like, and explain your reasoning.
a. The man starts three meters from the house and accelerates towards the tree.
b. The man stands still while he talks on his cell phone at the middle of the sidewalk, then
walks toward the house at a constant rate trying to get better cell reception. He comes to
a sudden stop when the coverage is good (about a meter before the house) and stands
still to finish his conversation.
c.The man starts close to the house, stands still for a little while, then walks toward the
tree at a constant rate for a while, then the slows to a stop.
Draw a position/time, velocity/time, and a acceleration/time graph for each scenario
what do the tropopause stratopause and mesopause have in common
Each is a zone of decreasing water vapor content within the atmosphere. ... Each is an interface between two layers of the atmosphere. Each is a point of maximum temperature in its layer of the atmosphere.
Physics 2.4.3 lab, please help, i just need this so i could move on to the next unit. 75 points if you could please do this
Answer:
There are only 38 points.
Explanation:
why are you saying 75?
A helicopter lifts 35m vertically into the air and then comes back down to the ground.
What is the distance of the helicopter’s flight?
What is the displacement of the helicopter’s flight?
Explanation:
Distance = Total path length = 35m + 35m = 70m
Displacement = Final - Initial position = 0m
I NEED HELP I AM SO CONFUSED, WILL GIVE BRAIN.
A stone is dropped from the roof of a building. It took 5 s for the stone to reach the ground. What is the height of the building?
Answer:
[tex]resolving \: \\ (\downarrow_{ + }) \: s = ut + \frac{1}{2} g {t}^{2} \\ u = 0 ,\: g = 9.81m. {s}^{ - 2} , \: t = 5s \\ s =h= \frac{1}{2} g {t}^{2}, = \frac{1}{2} (9.81){5}^{2}\\=4.9\times25 \\ h=122.6m[/tex]
How is water cleaned in chongqing?
Answer:
I know
Explanation:
it gets filterd out
1. Ethan is dragging a bag of grass from the garage to the street on the evening before garbage pick-up day. The diagram at the right is a free-body diagram. It uses arrows to represent the forces acting upon the bag. Each force is labeled according to type. The magnitude of the force is represented by the size of the arrow. Use the free body diagram to determine the net force acting upon the bag. The values of the individual forces are:
Fgrav = Fnorm = 60.5 N
Fapp = 40.2 N
Ffrict = 5.7 N.
From the calculations and the free body diagram, the net force that acts on the body is 34.5 N
What is the net force?The net force refers to the force that is acting on a body. Let us note that the gravitational force and the normal force cancel out each other. Thus the two force that act on the body are the applied force and the frictional force.
Thus;
The net force that acts on the body is;
40.2 N - 5.7 N = 34.5 N
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10. A child drops a ball from a window. The ball strikes the ground in 3.0 seconds. What is the velocity of the ball the instant before it hits the ground?
Which of the following statements accurately describe a scientific law?
there is no contradictory evidence in the current body of knowledge
it is an educated guess about how a process occurs
can be updated or rejected if any contradictory evidence is found
it is an statement that is true in many, but not all, cases
it is an observation that has been made many times
Answer:
The first statement appears most accurate.
The last statement also appears accurate, but it does not preclude any contradictory evidence.
The following statements accurately describe a scientific law: There is no contradictory evidence in the current body of knowledge. It is a statement that is true in many, but not all, cases. It is an observation that has been made many times.
The other statements do not accurately describe a scientific law:
"It is an educated guess about how a process occurs" describes a scientific hypothesis or theory, not a law.
"Can be updated or rejected if any contradictory evidence is found" describes the nature of scientific theories, which can be revised or discarded based on new evidence, but laws tend to remain consistent.
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Guys please help me on the rest of the numbers
Answer:
C. 100
D.3
E. 33.3
Explanation:
C. Mechanical Advantage=Load / Effort
= 200N
--------
100N
Therefore,. = 100
D. I. Velocity Ratio= distance moved by the effort / distance moved by load
= 30cm/10cm
= 3
II. Efficiency= M.A / V.R
= 100/3
= 33.33
I need help filling this in
Answer:
smaller and further from
Explanation:
Pass light through something clear and light, you'll most likely be able to see all of it's rays spread out, the "normal." Now, pass it through something dense, the amount of light will shrink, therefore be further from the "normal."
what is the first invention that humans created to look at the stars?
Answer:
telescope
Explanation:
| AMNH. Before telescopes were invented, people gazed at the night sky with amazement and dreamed of a closer look. The invention of the telescope in 1608 gave humans their chance to explore the vastness of the Universe.
Answer:
The invention of the telescope
PLS MARK BRAINLIEST
