Answer:
12.6
Explanation:
An oil tank has a base of area 2.5 m2 and is filled with oil to a depth of 1.2 m. The density of the
oil is 800 kg/m3. What is the force exerted on the base of the tank due to the oil?
A. 960N
B. 2400N
C. 9600N
D. 24 000N
Answer:
D. F = 24000[N]
Explanation:
To be able to calculate the force we must first find the pressure at the bottom of the tank. By means of the following equation:
[tex]P=Ro*g*h[/tex]
where:
Ro = density of the liquid = 800 [kg/m³]
g = gravity acceleration = 9.81 [m/s²]
h = elevation = 1.2 [m]
[tex]P=800*9.81*1.2\\P=9417.6[Pa][/tex]
Pressure is defined as the relationship between Force on the area.
[tex]P=F/A\\F=9417.6*2.5\\F = 23544 [N] = 24000[N][/tex]
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
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.
Substances will expand when they change from gas to a liquid. True False
Answer:
True
Explanation:
Liquid expands so therefore it is truee
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
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
A race car is accelerating at 5m/s and then speeds up to a final velocity of 12 m/s if the race car driver finished this let of the race in 6 seconds what was the car's acceleration
Answer:
the acceleration of the car is 1.167 m/s²
Explanation:
Given;
initial velocity of the race car, u = 5 m/s
final velocity of the race car, v = 12 m/s
time to finish the race, t = 6 s
The acceleration of the car is calculated as;
a = (v - u) / t
a = (12 - 5) / (6)
a = 1.167 m/s²
Therefore, the acceleration of the car is 1.167 m/s²
Answer:
1.167 m/s^2
Explanation:
Given that a race car is accelerating at 5m/s and then speeds up to a final velocity of 12 m/s if the race car driver finished this let of the race in 6 seconds what was the car's acceleration ?
From the question, the following parameters are given
Initial velocity U = 5 m/s
Final velocity V = 12 m/s
Time t = 6 s
According to the definition of acceleration:
Acceleration = change in velocity per time taken.
I.e
Acceleration =( V - U)/ t
Acceleration =( 12 - 5 )/6
Acceleration = 7/6
Acceleration = 1.167 m/s^2
Therefore, acceleration is 1.167 m/s^2
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.
A car engine has power than a horse because a car engine does the same amount of work in time. Yasmin and Raj each had 10 boxes of equal weight to stack next to each other on the same shelf, at the same height and in the same arrangement. Yasmin completed the task in 2 minutes, while Raj took 3 minutes to stack his boxes. Raj applied power than Yasmin because his stacking took time to do the same amount of work.
Answer:
A car engine has more power than a horse because a car engine does the same amount of work in time. Yasmin and Raj each had 10 boxes of equal weight to stack next to each other on the same shelf, at the same height and in the same arrangement. Yasmin completed the task in 2 minutes, while Raj took 3 minutes to stack his boxes. Raj applied less power than Yasmin because his stacking took more time to do the same amount of work.
Explanation:
A car engine has more power than a horse because a car engine does the same amount of work in less time. Raj applied less power than Yasmin because his stacking took more time to do the same amount of work.
What is power?The quantity of energy moved or converted per unit of time is known as power in physics. The watt, or one joule per second, is the unit of power in the International System of Units. Power is also referred to as activity in ancient writings. A scalar quantity is power.
Energy divided by time represents the dimension of power. The watt (W), which equates to one joule per second, is the unit of power in the International System of Units (SI).
Another popular unit of measurement is horsepower (hp), which is equivalent to a horse's power; one mechanical horsepower is equal to around 745.7 watts.
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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:
When a gas is compressed, its volume _____
Answer:
decreases
Explanation:
Answer:
Decreases
Explanation:
Wikipedia
Order the mechanical following waves from least energy to most energy.
Answer:
middle
top
bottom
under neith middle
"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:
___- is defined in science as the abilty to move matter or change matter in some other way
Answer:
Energy
Explanation:
Answer:
energy
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]
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.
Daniel steps on the gas pedal of his car, and the engine increases its performance from zero to
2700 rpms (rotations per minute). What are the frequency and period?
(Hint: frequency is cycles per second.]
Answer
The frequency and the period are 45 cycles/second and 0.023 seconds
Explanation:
The frequency of the engine is given by :
[tex]f=\dfrac{rpm}{60}[/tex]
We have, the engine increases its performance from zero to 2700 rpms.
Frequency,
[tex]f=\dfrac{2700}{60}\ \text{cycles per second}\\\\f=45\ \text{cycles per second}[/tex]
The time period of the engine is given by :
T = f/f
So,
[tex]T=\dfrac{1}{45}\ s\\\\T=0.023\ s[/tex]
Hence, the required frequency and the period are 45 cycles/second and 0.023 seconds respectively.
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....
I NEED AN ANSWER!
A sled going down a hill covered in snow eventually comes to
a stop. Explain why this happens in terms of energy. Use
the terms potential energy, kinetic energy , and friction.
Answer:
Before sled starts to move it has a potential energy due to the elevation...and then that potential energy converted to kinetic energy due to presence of a velocity...the sled will continue to move if their is no resesive force...but however friction force is presence that cause the sled to stop....
3. The number of revolutions made by a tire traveling over a fixed distance varies inversely to the radius of the
tire. A 12-inch radius tire makes 100 revolutions to travel a certain distance. How many revolutions would a
16-inch radius tire require to travel the same distance?
Answer:
Most people when asked, “What is the equation of a line?”, will answer, “y = mx + b”. This is the
equation of a line in what is called slope-intercept form where “m” is the slope and “b” is the yintercept. So, how do you find the equation of a line? There are several different ways that you can find
the equation of a line. I find the equation of a line everytime by following the same three steps:
Step 1: Find the slope of the line.
Step 2: Use the slope to find the y-intercept.
Step 3: Use steps 1 and 2 to write the answer.
I will explain these steps by looking a several examples. Please understand that there are often several
different ways to complete each math problem, but I have found through the years that students are most
successful when the do problems the same way each and every time they attempt the problem. If you
know a different way to find the answer that is great, but I am going to show how to do the problem one
way and use the same technique everytime I see this problem.
Explanation:
The ratio of number of revolution to the radius of the tire will be constant since the distance is constant. 16 - inch radius tire will require 75 revolutions to travel the same distance.
CIRCULAR MOTIONWhen all points in a body move in concentric circles is known as rotational or circular motion. Below are few facts about circular motion.
Speed is constantVelocity keeps changingAcceleration acts toward the center.Given that the number of revolutions N made by a tire traveling over a fixed distance D varies inversely to the radius r of the tire. That is
N [tex]\alpha[/tex] 1/r
N = K/r
K = Nr
Where K = Proportionality constant
If a 12-inch radius tire makes 100 revolutions to travel a certain distance, Then,
K = 100 x 12
K = 1200 rev inches
How many revolutions would a 16-inch radius tire require to travel the same distance?
by applying the same formula, let us substitute r for 16 inches and 1200 for K
K = Nr
1200 = N x 16
N = 1200/16
N = 75 revolutions
Therefore, 16 - inch radius tire will require 75 revolutions to travel the same distance.
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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
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:
Which one!!!!!!!!!!!!
Answer:
3N to the right
Explanation:
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.
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Please help with both questions thank you!
I think is:
(4)Inner core
(4)different Kingdome different species
hope this help :)
What is the weight of a 82.1 kg object on Jupiter, where the acceleration due to gravity is 24.5 m/s2?
8. slit-like opening to the larynx
Answer:
this is called the glottis
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 .
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.
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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 D