Answer:
p = 65.52 kg m/s
Explanation:
p = m × v
p = 31.2 × 2.1
p = 65.52 kg m/s
A woman lifts her 120 newton child up one meter and carries her for a distance of 50 meters to the child's bedroom. How much work does the woman do?
Answer:
make the child walk by itself
Explanation:
duh
Substances will expand when they change from gas to a liquid. True False
Answer:
True
Explanation:
Liquid expands so therefore it is truee
Billiard ball A (0.35 kg) is struck such that it moves at 10 m/s toward a second identical ball (Ball B) initially at rest. After the collision, Ball A continues to move in the same direction at 2 m/s. What is the magnitude of the velocity for Ball B after the collision?
Answer:
Explanation:
We shall apply law of conservation of momentum during the collision of ball A and B .
Total momentum before collision of A and B = .35 x 10 = 3.5 kg m/s
Let the velocity of B after collision be v .
Total momentum after collision = .35 x 2 + .35v
According to law of conservation of momentum
.35 x 2 + .35v = 3.5
.35 v = 2.8
v = 8 m /s .
The direction of B will be same as direction of A .
An engineer is investigating potential energy with two
identical magnetic roller coaster cars on different sides of a
center magnet that cannot move. To test her ideas, the
engineer will move one car one space. Which movement will
result in the largest increase in potential energy?
A.
Moving Car 1 one space toward the center magnet.
B.
Moving Car 2 one space toward the center magnet.
C.
Moving Car 2 one space away from the center magnet.
D.
All these movements will result in the same change in potential energy
because they each move a roller coaster car the same distance.
Answer:
Since they move in the same direction, share the same magnetic qualities, and move one unit identically We can safely say its DWhen you go out into the sun, the UV light can give you a tan. UV light has a frequency of 7.89 x 1014 Hz. What is the wavelength of UV light?
Please use 3 x 108 m/s for the speed of light (c).
Answer:
Explanation:
Formula and givens
λ = c / fλ is the wavelengthc = the speed of lightf = the frequencyc = 3*10^8f = 7.89 * 10^14λ = ?
Solution
λ = 3*10^8 / 7.89*10^14
λ = 3*10^8/7.89*10^14
λ = 2.36 * 10^7
λ = 236 nanometers. What you use as your solution depends on what what you have been taught.
What is the weight of a 82.1 kg object on Jupiter, where the acceleration due to gravity is 24.5 m/s2?
20 points
A net force of 24 N is applied to an object for 5.0 s. The object is pushed a total of 5.2 m. What is the mass of the object? What equations will be used?
Answer:
S = V0 t + 1/2 a t^2 net distance traveled
5.2 = a/2 * 25
a = 10.4 / 25 = ,416 m / s^2
F = m * a
m = F / a = 24 / .416 = 57.7 N
What is the mass of an object that requires 100N of force in order to accelerate 10m/s2
Explanation:
Hey there!
Given;
Force (f) = 100 N
Acceleration (a) = 10m/s^2.
Mass (m)=?
We have;
Force = mass * acceleration.
So,
100 = m * 10
Or, 100 = 10m
Or, m= 100/10
Therefore, mass is 10kg.
Hope it helps....
When a gas is compressed, its volume _____
Answer:
decreases
Explanation:
Answer:
Decreases
Explanation:
Wikipedia
What is energy? Where does it come from? What does it do? Explain in 5 or more sentences please! :)
Answer:
Energy is defined as the ability to do work. Forms of energy could be kinetic energy or potential energy. Thermal or heat energy can originate from a hot object such as the sun. Energy is used to produce work. Electrical energy for lighting purposes and heating in homes and factories.
Explanation:
Energy is defined as the ability to do work and can be in various forms such as kinetic energy, potential energy, thermal, chemical, electrical energy etc.
Energy origination depends on the type of energy form in discussion. Thermal or heat energy can originate from a hot object such as the sun or an iron box, chemical energy originates from the interaction of atoms and molecules and electrical energy can be initiated by movements of electrons.
Energy is used to produce work. Different forms of energy can do different tasks such as;
Heat energy for heating water
Electrical energy for lighting purposes
Geothermal energy for producing heat and electricity
Nuclear energy for production of nuclear power
Chemical energy for facilitating chemical reactions
The independent variable in Experiment III was the A ) treatments used to prevent corrosion . B ) changes made to the shape of the nails. C) time the treated nails were left undisturbed . D) amount of corrosion , rated on a scale of 0 to 5.
Answer: the answer is A
Explanation: The independent or manipulated variable in Experiment III was the treatments used to prevent corrosion. The dependent or responding variable was the amount of corrosion, rated on a scale of 0 to 5.
1. Deshaun Watson (100 kg) accelerates from rest to 9.0 m/s in 1.5 s. What is the average power
output of Deshaun in kW? (2 mark)
Answer:
P = 5400[W]
Explanation:
We must use the following equation of kinematics to calculate the acceleration.
[tex]v_{f}=v_{o}+a*t[/tex]
where:
Vf = final velocity = 9 [m/s]
Vo = initial velocity = 0 (starting from rest)
a = acceleration [m/s²]
t = time = 1.5 [s]
[tex]9=0+a*1.5\\a=9/1.5\\a=6[m/s^{2} ][/tex]
Now with this second equation of kinematics, we can determine the distance traveled.
[tex]v_{f}^{2}=v_{o}^{2}+2*a*x[/tex]
where:
x= distance [m]
[tex]9^{2} = 0 +2*6*x\\12*x=81\\x=6.75[m][/tex]
Now we must use Newton's second law which tells us that the sum of forces is equal to the product of mass by acceleration.
∑F = m*a
Now replacing:
[tex]F=100*6\\F=600[N][/tex]
Ahora la potencia se puede calcular por medio del producto de la fuerza por velocidad.
[tex]P=F*v[/tex]
where:
P = power [W]
F = force = 600 [N]
v = velocity = 9 [m/s]
[tex]P=9*600\\P=5400[W][/tex]
What are three ways in which people use microwaves?
Answer:
Sample Response: They are used to transmit data, TV signals, and telephone signals. They are also used in ovens and radar.
Explanation:
Timed please help i would really appreciate it! i will try my best to mark brainliest!
Maria is late to the bus stop. Running to catch the bus, she travels 100m in 60s. What is her speed? *
16.7 m/s
600 m/s
1.67 m/s
Answer:
v = 1.67 [m/s]
Explanation:
Average velocity is defined as the relationship between space and time.
[tex]V=x/t[/tex]
where:
x = distance = 100 [m]
t = time = 60 [s]
now replacing:
[tex]V= 100/60\\V= 1.67[m/s][/tex]
Help!
If alcohol or drugs are used in small quantities, and with little or no damaging consequences, it's not usually
considered drug abuse.
A. True
B. False
If alcohol or drugs are used in small quantities, and with little or no damaging consequences, it's not usually considered drug abuse.
The correct option is A.
What is driver license?A person who has completed his 18 years of age, wants to drive any vehicle whether car or bike, he must have a license called the driver's license.
Drug abuse is the aggressiveness developed in person after drinking alcohol.
In countries, when a person takes in alcohol with little or no damaging consequences, he is not to be considered as drug abuse.
The given statement is True.
Thus, the correct option is A.
Learn more about driver license.
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In the formulas for latent heat of fusion and latent heat of vaporization, what does Q represent?
the amount of heat released or absorbed by a substance
the mass of a substance
the amount of a substance that changes state
the temperature of a substance
Answer:
IT'S A
the amount of heat released or absorbed by a substance
Explanation:
PLEASE MARK ME AS BRAINLIEST
Answer:
(A)The amount of heat released or absorbed by a substance
Explanation:
Just took the test
"Calculate the force of friction of a 5 kg steel block sliding down a 10 degree steel ramp." Would it be assumed the force is static or kinetic?
Answer:
kinedk engrerr
Explanation:
Match the term and the definition
Lesson 1.09
Question 5 options:
Stationary Front _
Cold Front _
Occluded Front _
Warm Front _
1. When a cold air mass and a warm air mass meet but are at a standstill, the boundary is called
2. If warm or more humid air presses forward and colder or drier air draws back, the boundary is called
3. If colder or drier air presses forward and warmer or more humid air draws back, the boundary is called
4. Sometimes a warm air mass can get caught between two cold fronts, which can force the warm air up into a wedge shape.
Answer:
1. When a cold air mass and a warm air mass meet but are at a standstill, the boundary is called stationary front.
2. If warm or more humid air presses forward and colder or drier air draws back, the boundary is called warm front.
3. If colder or drier air presses forward and warmer or more humid air draws back, the boundary is called cold front.
4. Sometimes a warm air mass can get caught between two cold fronts, which can force the warm air up into a wedge shape is called occluded front.
Explanation:
A stationary front is created when two air masses of different temperatures come together but remain stationary. A warm front is created when warmer, more humid air pushes forward and cooler, drier air pulls back.
What is the front?A front in a physical system can be thought of as the boundary between two distinct possible states (either stable or unstable). When two air masses with different temperatures come together but stay stationary, a stationary front is formed.
The correct matches are:
When a cold air mass and a warm air mass meet but are at a standstill, the boundary is called a stationary front.If warm or more humid air presses forward and colder or drier air draws back, the boundary is called a warm front.If colder or drier air presses forward and warmer or more humid air draws back, the boundary is called a cold front.Sometimes a warm air mass can get caught between two cold fronts, which can force the warm air up into a wedge shape, is called an occluded front.Therefore, When cooler, drier air pulls back and warmer, more humid air rushes forward, a warm front is formed.
Learn more about the front, refer to:
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Question 3 of 10
What standard units are used for power? Give the name, not the symbol.
Enter your answer
Answer:
The unit of power is pascal.
what is the area of S-t graph
Answer:
Area under DT graph
Important: The area between a velocity-time graph and the `time' axis gives the displacement of the object. The slope is the same all the way from A to C, so the cyclist's velocity is constant over the entire displacement he travels. In figure 5.1 are examples of the displacement-time graphs you will encounter.
Important!
New drivers who are 18 don't have to complete all the steps of the graduated licensing system.
A. True
B. False
Answer:
b
Explanation:
If a net 300 N force is applied to a 100 kg mass, what will be the acceleration of the mass?
Answer:
3 m/s²Explanation:
The acceleration of an object given it's mass and the force acting on it can be found by using the formula
[tex]a = \frac{f}{m} \\ [/tex]
f is the force
m is the mass
From the question we have
[tex]a = \frac{300}{100} = 3 \\ [/tex]
We have the final answer as
3 m/s²Hope this helps you
___- is defined in science as the abilty to move matter or change matter in some other way
Answer:
Energy
Explanation:
Answer:
energy
Explanation:
When is the net force on the car closest to 0?
Answer: The net force is the vector sum of all the forces acting on an object. When an object is in equilibrium (either at rest or moving with constant velocity), the net force acting on it zero. A vector can only have zero magnitude if all of its components are zero. there is more than one force acting on an object, then F is the net force. If two people pull on an object with equal forces in opposite directions, then the net force is zero and the acceleration is zero
Explanation:
Questlon 7 of 10
Which state can always conduct electricity?
OA. Solid
OB. Liquid
OC. Gas
OD. PIlasma
SUBMIT
Answer:
0B. Liqiud can always conduct electricity
Question 2 of 10
What is the product of the mass and velocity of an object?
O A. Impulse
O B. Force
O C. Energy
O D. Momentum
Answer: The answer is D
Explanation:
(show work) WILL MARK BRAINLIEST!!
Which has a greater momentum, a 350kg car traveling at 20 m/s or a 400kg truck traveling at 17.5 m/s?
Answer: the formula for momentum is velocity times mass
car :
350 x 20 = 7000
truck:
400 x 17.5 = 3000
Ans : Car has a greater momentum
Explanation: Please mark Brainlest
8. slit-like opening to the larynx
Answer:
this is called the glottis
Please help with both questions thank you!
I think is:
(4)Inner core
(4)different Kingdome different species
hope this help :)
Order the mechanical following waves from least energy to most energy.
Answer:
middle
top
bottom
under neith middle
