Answer:
B
Explanation:
It is not repulsive at all
What constant horizontal force is required to drag a 5 kg block along a
horizontal surface with an acceleration of 1 ms-2 if the coefficient of
sliding friction between the block and the surface is 0.5.
Answer:
25N
Explanation:
formula=> Frictional force= coefficient of friction x normal reaction
normal reaction is mass x gravity(10N/kg)
so Frictional force= 0.5x5x10
=25N
but that is the Frictional force not the constant force
to get the constant force, subtract the Frictional force from the weight of the block
weight= mass x gravity
= 5x10
= 50N
50N-25N
=25N
in a car how does an airbag minimize the force acting on a person during a collision
Answer:
It increases the time it takes for the person to stop.
Explanation:
Answer:
It increases the time it takes for the person to stop.
Explanation:
What is the energy conversion in a hair dryer?
A. Heat energy to electric and mechanical energy
B. Potential energy to electric and kinetic energy
C. Electric energy to heat and kinetic energy
D. Light energy to mechanical and electric energy
Answer:
C.Electrical energy to heat and kinetic energy
the type of energy transferred by a wave in a medium is______ energy
Answer:
kinetic energy
Explanation:
When particles become part of a wave, they start to move up or down. This means that kinetic energy (energy of movement) has been transferred to them.
well, it also depends on the type of medium you're talking about. But, basically kinetic energy is transferred
A negative externality:
A) is a cost to a bystander.
B) is a cost to the buyer.
C) is a cost to the seller.
D) exists with all market transactions.
Answer:
A) is a cost to a bystander.
Explanation:
A negative externality is defined as the difference between the social cost and an economic agent from the private cost of an action.
A negative externality is a cost to a bystander as negative externality occurs when a transaction between a buyer and seller affects third party with a loss, which has no involvement in the transaction.
Hence, the correct option is A.
What is the purpose of putting dimples on the surface of materials?
Answer:
Dimples help the golf ball convert spin into lift.
But it was quite an accident that this effect was discovered.
Explanation:
Please i need a Brainliest.
Answer: It depends on the material and its purpose.
Explanation:
at a surface level question, I would assume for the most part, less area available for friction.
A camera lens focuses on an object 75.0 cm from the lensThe image forms 3.50 cm behind the lens. What is the magnification of the image?
Answer:
7/150
Explanation:
The following data were obtained from the question:
Object distance (u) = 75cm
Image distance (v) = 3.5cm
Magnification (M) =..?
Magnification is simply defined as:
Magnification (M) = Image distance (v)/ object distance (u)
M = v /u
With the above formula, we can obtain the magnification of the image as follow:
M = v/u
M = 3.5/75
M = 7/150
Therefore, the magnification of the image is 7/150.
Answer:
-0.0466
Explanation:
"We the people of the United States, in order to form a more perfect union, establish justice, insure domestic tranquility, provide for the common defense, promote the general welfare, and secure the blessings of liberty to ourselves and our posterity, do ordain and establish this Constitution for the United States of America." - The United States Constitution According to the Preamble, which action would be allowed by The Constitution?"We the people of the United States, in order to form a more perfect union, establish justice, insure domestic tranquility, provide for the common defense, promote the general welfare, and secure the blessings of liberty to ourselves and our posterity, do ordain and establish this Constitution for the United States of America." - The United States Constitution According to the Preamble, which action would be allowed by The Constitution? A) helping businesses pay their workers less B) giving Congress the power to create courts C) granting government the power to seize people's property D) securing the rights of the wealthy over the rights of the poor
The correct answer is B) Giving Congress the power to create courts
Explanation:
One of the principles the Constitution mentions in the preamble is Justice, this is mentioned in "We the people of the United States, in order to form a more perfect union, establish justice..." According to this, a priority is to make the country have justice, which is possible through courts, laws, among others. In this context, the action that would be allowed is "Giving Congress the power to create courts" because this might ensure the justice principle is applied in the U.S.
What are data?
A. Pieces of information recorded in an experiment
B. Sources that summarize a primary source
C. Educated guesses about the outcome of an experiment
D. Variables that are adjusted by the experimenter
SUBNIIT
Answer:
Data is pieces of information recorded in an experiment because data are individual pieces of factual answer recorded and used for the analysis
Explanation:
I hope this will help you :)
you are on the airplane, about to fly to an exotic location. How do acceleration, speed and inertia work to overcome the forces of gravity and air resistance during the take-off?
Answer:
Make a paper airplane and have him toss it. his arm would be the thrust, the wings would provide lift, the shape of it would minimize drag (air resistance). However, if he put an engine on the same airplane, it would do the same thing as your arm would do.
So thrust, lift, shape.... Inertia is just a by product of the force that pushing you into your seat.
what are three reasons we should be concerned about the current rapid extinction rate
Answer:
1. Possibility of all life being wiped out
2. Ecosystem being imbalanced.
3. Loss of one species triggers the lost of others as the food chain will collapse.
Answer:
a
Explanation:
The graph below shows the conservation of energy for a skydiver jumping out
of a plane and landing safely on the ground. Which energy is represented by
line B?
A. Elastic energy
B. Kinetic energy
C. Light energy
D. Potential energy
Answer:
The correct option is:
B) Kinetic Energy
Explanation:
We know that if a body is placed at a certain height, it possesses Potential Energy, which is represented by 'mgh'. In this case, when the skydiver is present in the plane, before jumping, he has potential energy as he is at height 'h'.
As Kinetic energy is given as '(1/2)mv²' dependent on velocity of the object, when the skydiver jumps of the plane, his height starts decreasing, which decreases his Potential Energy. As energy can neither be created or destroyed, but is converted to one form or another, all this Potential energy starts to convert into Kinetic energy. As Potential Energy decreases with distance, Kinetic energy increases. Hence, line B represents Kinetic Energy.
The voltage in a lightbulb is given by the equation V = IR. In this equation, Vis
the voltage, / is the current, and Ris the resistance. What is the resistance in a
lightbulb with a voltage of 25 V and a current of 0.2 A?
Answer:
R = 125 ohms
Explanation:
V = i * R
R = V / I
V = 25
I = 0.2
R = 25 / 0.2
R = 250 / 2
R = 125 ohms
Which of the following is a scalar quantity?
O A. 8 km/hr down
O B. 45 ft to the right
O C. 100 ft/min
O D. 25 m/s south
Do you believe the right to property is a natural right? Why or why not?
A portable electric heater has a resistance of 10 ohms. It plugs into a wall outlet that is 120 V. How much current, in amps, does it draw?
Answer:
12 A
Explanation:
I = V/R = 120 V/ 10 Ohm = 12 A
Is popcorn a object
Eatable is frequently used to define something that has some level of acceptable flavour, whereas edible is typically used to describe something that is safe to eat, regardless of taste.
What thing best defines as object?The portion of a sentence that the verb directs an action toward is known as an object. In a sentence written in standard English, the order is usually subject-verb-object. The action is performed by the subject, which is represented by the verb, and is received by the object.
Anything that humans can safely eat is considered to be edible. “Edible” differs from “eatable” because it solely considers if an object is suitable for consumption, rather than how it tastes. The term “edible” refers to naturally occurring, non-poisonous objects, such as some mushrooms, insects, seaweed, and so forth.
Therefore, popcorn is defined as an object.
Learn more about object here:
https://brainly.com/question/12569661
#SPJ2
Referring to the above diagram, how high will the ball rise on the right-hand incline?
0 cm
7 cm
15 cm
no way to tell
PLEASE HELP: A 1400 kg car moving +13.7 m/s makes an elastic collision with a 3200 kg truck, initially at rest. What is the velocity of the truck after the collision? (Unit = m/s) remember: right is +, left is -
Answer:
[tex]8.339\ m/s[/tex]
Explanation:
Given :
[tex]m1= 1400 kg \\v1=13.7 m/s\\m2=3200 kg \\v2=0[/tex]
We know that for the elastic collision
[tex]V2=\frac{2m1v1}{m1+m2} \ + \frac{m2-m1 * v2}{m1+m2}[/tex]
Putting the respective value we get
[tex]V2=\frac{2*1400*13.7}{1400+3200} \ + 0\\ V2=8.339\ m/s[/tex]
Answer:
8.339
Explanation:
A body starting from rest moves with uniform acceleration until it attains a speed of 100m/s after 20 s. It maintained this speed for the next 30s and came to rest by uniformly deceleration in 30s. (a.) Find its acceleration.
Answer:
5m/s^2
Explanation:
[tex]v_f=v_o+at[/tex]
Since it started from rest:
[tex]100m/s=a(20s) \\\\a=5m/s^2[/tex]
Hope this helps!
why doesn't the skateboarder rolls as high up the ramp each time you go down the ramp
Answer:
Some of her energy transforms to thermal energy.
Explanation:
Why does the pattern of colors repeat in a thin soap film? Please use 2 content related sentences. (ref: p.522-530)
Answer: The pattern of colors that repeat in a thin soap film is a result of the interference of light waves reflecting off the front and back surfaces of the film. The specific colors seen are determined by the thickness of the film, with different wavelengths of light being reflected or refracted at different angles, creating the characteristic rainbow pattern.
What is the tendency of a material to oppose the flow of charge?
I think the answer is Resistance. If the link i posted int he comment is right.
What statement describes earthquakes?
Answer:
A
Explanation:
it is cause When the stress on the edge overcomes the friction, there is an earthquake that releases energy in waves that travel through the earth's crust and cause the shaking that we feel
Calculate the orbital radii for the first six principal quantum numbers
Answer:
Explanation:
Formula for calculating radius is
r=.529A x n^2 where A=10^-10m
So put n=1,2,3,4............
You push a cart with mass 15 kg forward , giving it an acceleration of 3 m/s ^ 2 . How much force did you apply ? O A. 0.2N O B. O 18N O D. 45 N
Answer: force = mass x accelegation
Explanation: 15x3 = 45 N
Answer:
A
Explanation:
A cat with a mass of 5 kg sits on a branch that is 26 m off the ground. What is
its gravitational potential energy? The acceleration of gravity is 9.8 m/s2
A. 872 J
B. 1274 J
C. 638 J
D. 244 J
Answer:
1274 J.
Explanation:
P. E= mgh
where m = 5 kg
g = 9.8m/s²
h = 26m
P. E = 5*26*9.8
=1274 J.
In a closed system, _____ energy is equal to potential energy plus kinetic energy. A. mechanical B. electrical C. thermal D. chemical
Answer:
Well, Your answer is Mechanical. Because, The Mechanical energy is the sum of the kinetic energy and the potential energy. In the closed systems, The mechanical energy is equel to potential energy plus kinetic energy.
Good Luck!!~
By Itsbrazts
Answer: Mechanical Energy
Explanation: The Mechanical energy of an object is equal to Potential energy plus Kinetic energy.
Help me please I need help
Answer:
4. The pressure decreases and the temperature increases.
Explanation:
PV = nRT
Rearrange:
V/R = nT/P
V is constant, so:
k = nT/P
kP = nT
n is increasing.
If P decreases, T must also decrease.
As your bike coasts downhill, your speed goes from 2 m/s to 4 m/s in 0.5 seconds. What is your acceleration?
A. 4 m/s
B. 1 m/s
C. 2 m/s
D. 8 m/s
Answer:
A.4m/s
Explanation:
(4m/s-2m/s)÷0.5s
=2m/s÷0.5s
=4m/s