Answer:
the concrete because the concrete absorbs the suns energy, making it hot
Explanation:
Please give me brainliest
The concrete is darker so absorbs more heat.
a toy airplane is flying at a speed of 8 m/s with an acceleration of 0.9 m/s^2. How fast is it flying after 2 seconds? A)9.8 m/s B)8.1 m/s C)5.2 m/s D)3.6 m/s
Answer:
A) 9.8m/s this answer is correct.
The acceleration is increasing by 0.9m/s^2 .
so, in each second it will increase by 0.9m/s^2.
Therefore, in 2 second
0.9 * 2
= 1.8m/s
Now,
8 + 1.8
= 9.8m/s
Do you believe the right to property is a natural right? Why or why not?
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............
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 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
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.
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:
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
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A girl runs up the down escalator in the mall. If the escalator is moving with a
velocity of 24 m/min and the girl is running with a velocity of 30 m/min, how far up the escalator can she go in 4 minutes?
A. 10 m
B. 30 m
C. 48 m
D. 24 m
Answer:
D. 24 m
Explanation:
Running up - velocity + 30 m/min
Escalator 's moving down velocity - 24 m/min
Sum velocity (30 - 24) = 6 m/min
6 m/min * 4 min = 24 m
"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.
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:
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:
How many ohms of resistance must be present in a circuit that has 240 volts and a current of 15 amps?
ОА.
3,600 ohms
О В.
16 ohms
230 ohms
D. 0.063 ohms
Answer:
16 ohms
Explanation:
V= I ⋅ R
where, V is the net potential difference in the circuit, I is the current in the circuit and R is the net resistance of the circuit.
In this case, V = 240 volts, I = 15 amperes.
240 = 15 ⋅ R
⇒ R = 240/ 15 = 16 ohms
Answer:
b-16ohms
Explanation:
If you are using online learning/PLATO the answer is proven to be B-16 ohms
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:
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
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!
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:
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
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
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.
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
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 :)
nl
AL
A beaker contained 20 mL
of water. When a marble
was added, the water level
rose to 30 mL. Using the
volume of displacement,
what is the volume of the
marble?
L
L
Answer:
10 mL= 0.01 L
Explanation:
V(water) = 20 mL
V(water + a marble) = 30 mL
V(marble) = V(water + a marble) - V(water) = 30 mL - 20 mL = 10 mL= 0.01 L
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
Electricity is transferred across step-up transformers to ...
... increase its potential difference for transmission from power stations
Or
... increase its potential difference for domestic use
Or
... increase its current for transmission from power stations
Answer:
Assuming that a transformer is 100 per cent efficient, the following equation can be used to calculate the power output from the transformer: A step-down transformer converts 11 500 V into 230 V ...
Explanation:
MARK AS BRAINLIEST AND HELP IN MY QUESTION IN PHYSICS
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.
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 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.
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.
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.