Answer:
m = 0.51[kg]
Explanation:
Potential energy is defined as the product of mass by gravity by height.
[tex]E_{pot}=m*g*h[/tex]
where:
Epot = potential energy = 15 [J]
m = mass [kg]
g = gravity acceleration = 9.8 [m/s²]
h = elevation = 3 [m]
Now replacing:
[tex]E_{pot}=m*g*h\\15=m*9.8*3\\m = 0.51[kg][/tex]
In handball, who is the only player allowed in the goalie area?
Answer:
Only the goalie is allowed inside the goal crease. The only exception when another player is allowed in the goal area is when they take off from outside the goal area, and shoots or passes the ball before landing. To avoid interference with other players, the player must then exit the goal area as soon as possible.
Explanation:
Show the steps im confused.
The answer is 14 m/s
Answer:
14 m/s
Explanation:
KE=1/2mv^2
5880J= 1/2(60kg)v^2
5880J=(30)(V^2)
5880/30=V^2
196=v^2
square root of 196 is 14
is a solenoid a magnet or no ??
Answer the term solenoid refers to a long, thin loop of wire, often wrapped around a metallic core, which produces a magnetic field when an electric current is passed through it. Solenoids are important because they can create controlled magnetic fields and can be used as electromagnets
I hope it is helpful
What are the eight types of energy?
Describe how sound at a concert is different from the front row and the back.
please help! you are awesome! also brainliest :)
The diagram below shows the two forces that keep Earth in orbit around the Sun.
What is responsible for Earth's movement toward the Sun?
A. Sun's forward motion
B. Earth's forward motion
C. Expansion of the universe.
D. force of gravity
Answer:
It's d
Explanation:
Answer: D
Explanation:
Force of gravity
You measure my life in hours and I serve you by expiring. I’m quick when I’m thin and slow when I’m fat. The wind is my enemy.
This is so hard.
The measure of life in hours and wind is my enemy states that is a candle as it states I serve you by expiring.
What is a candle ?A candle is a stick made of wax and forms an inflammable solid substance. It has a light and gives some sort of fragrance.
It can also provide a medium to heat or to save time, as the candle is burnt the oxygen is consumed and carbon id is given out. As the statement speaks about the wind which is my enemy, it states the nature of the candle that dies out immediately.
Find out more information about the candle.
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Someone please help me! Please help
Answer:
Explanation:
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Cell with structures labeled A, B, and C
Cell with structures labeled A, B, and C
What structure represents a chloroplast in the cell?
!!URGENT PLEASE!!
The equation for the formation of water from hydrogen gas and oxygen gas is 2H2+O2→2H2O . How many grams of water can be made from 64 g of oxygen gas?
Answer: 144 g
the mol of the oxygen gas is 64/16 = 4 (mol)
we have:
2H2 + O2 => 2H2O
4 ------> 8
=> the mol of H2O is 8 mol
=> m(H2O) = 8.(2 + 16) = 8.18 = 144 (g)
Explanation:
HELP PLS MARKING BRANLIST 100 pts TAKING TEST RN
An airplane went from 120 m/s to 180 m/s in 4.0 seconds. What was its acceleration?
45 m/s2
15 m/s2
60 m/s2
30 m/s2
Answer:
15 m/s^2 The first thing to calculate is the difference between the final and initial velocities. So 180 m/s - 120 m/s = 60 m/s So the plane changed velocity by a total of 60 m/s. Now divide that change in velocity by the amount of time taken to cause that change in velocity, giving 60 m/s / 4.0 s = 15.0 m/s^2 Since you only have 2 significaant figures, round the result to 2 significant figures giving 15 m/s^2
Explanation:
A 1.5 kg ball is thrown at 10 m/s. What is the ball's momentum?
Answer:
[tex]\boxed {\boxed {\sf 15 \ kg*m/s}}[/tex]
Explanation:
Momentum is the product of mass and velocity.
[tex]p=m*v[/tex]
The mass of the ball is 1.5 kilograms and the velocity is 10 meters per second.
[tex]m= 1.5 \ kg \\v= 10 \ m/s[/tex]
Substitute the values into the formula.
[tex]p= 1.5 \ kg* 10 \ m/s[/tex]
Multiply.
[tex]p=15 \ kg*m/s[/tex]
The momentum of the ball is 15 kilogram meters per second.
Answer:
15 kg m/s
Explanation:
[tex]p = mv \: = 1.5 \times 10 = 15 \: kgm {s}^{ - 1} [/tex]
Can someone help me with this last question
Which is a disadvantage of storing data digitally?
A.The parts of devices that store data are unstable compared to analog storage.
B. Other people can access personal data when a virus is copied with the data.
C. Noise makes digital data unreliable when copied.
D. The quality of copies stays the same as more copies are made.
Answer: its B I jus took it
Explanation:
100 PTs HELP PLS MARKING BRANLIST TAKING TEST RN
John is running 4 m/s when he decides to make a final sprint to the finish line. He crosses the finish line 6 seconds later
running 8 m/s. What was his acceleration in the last 6 seconds of the race?
-1.33 m/s2
1.33 m/s2
0.67 m/s2
-0.67 m/s2
Answer:
Explanation:
uhm answer is 6x8 +6+4 divded by the race seconds
Answer:
0.67m/s2
Explanation:
Calculate the momentum of a boat with a mass of 95kg moving at 2m/Ss
Answer:
190 kg m/s
Explanation:
Momentum = Velocity × Mass
→ Substitute in values
2 × 95 = 190 kg m/s
The momentum of the boat of mass 95 Kg moving at 2 m/s will be 190 Kg m/s.
What is Momentum?Momentum is defined as the product of mass of velocity. Momentum is a vector quantity. Mathematically, we can write momentum as -
p = mv
It is also the measure of the impact force imparted by any moving object, when it comes in contact with some other body.
Given is a boat with a mass of 95 Kg moving at 2 m/s.
Mass [m] = 95 Kg
Velocity [v] = 2m/s
We can write the momentum as -
p = mv
Substituting values, we get -
Momentum [p] = 95 x 2 = 190 Kg m/s
p = 190 Kg m/s
Therefore, the momentum of the boat of mass 95 Kg moving at 2 m/s will be 190 Kg m/s.
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The more energy, the hotter the object. And the shorter the wave
length the more energy there is.
True
False
Help me plssss!!
Answer:
that is true
Explanation:
Answer:
True.
Explanation:
Energy can be given off by heat, a lot of heat can be a sign of a lot of energy. And a shorter wavelength the more energy, which I've learned in school.
A 4 kg object is moving at a speed of 5 m/sec. How much kinetic energy does the object have? A. 10 joules B. 20 joules C. 50 joules D. 100 joules
Answer:
A. 10 joules
Explanation:
Given parameters:
Mass of object = 4kg
Speed = 5m/s
Unknown:
Kinetic energy of the the object = ?
Solution:
Kinetic energy is the energy due to a moving body.
So;
mathematically;
K.E = [tex]\frac{1}{2}[/tex] x m v²
m is the mass
v is the velocity
K.E = [tex]\frac{1}{2}[/tex] x 4 x 5 = 10J
The kinetic energy of the given moving object is 50 J. The Kinetic energy of an object is the energy due to its motion.
What is Kinetic energy?The Kinetic energy of an object is the energy due to its motion. It can be given as
[tex]KE = \dfrac 12 mv^2[/tex]
Where,
[tex]m[/tex] - mass = 4 kg
[tex]v[/tex] - velocity = 5 m/sec.
Put the values in the formula,
[tex]KE = \dfrac 12 4 \times 5^2\\\\KE = 50 \rm \ J[/tex]
Therefore, the kinetic energy of the given moving object is 50 J.
Learn more about kinetic energy:
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please help me ;3 (ALSO REMEMBER IT SAYS SELECT TWO)
Answer:
B and C
Explanation:
It is a reaction between a component(chemical reaction).
what is the foemula for this problem
what would the answer be
Answer:
D
Explanation:
The density has a formula of d = m / V.
The volumes are given as the same.
The density will be
d_lead = 113/ V
d_aluminum = 27/V
It does not matter for this question what the volume actually is. Just note that the value of the volume is the same for each ball.
A: incorrect. If the volumes are the same, the density is not the same because the masses are different.
B: incorrect. If the density of the two balls was less than water, the two balls would float. Never going to happen unless the balls are thin shells.
C: incorrect. The exact opposite is the answer.
D: Correct. This is the answer.
Which object has a stronger
gravitational pull to the Earth,
a bicycle or an elephant?
Describe some things that Ye-Jun could do each day to increase the healthiness of his lifestyle.
Answer:
Eat more healthy foods and keep more active.
Explanation:
What does an element's group number tell you about an element's chemical and physical properties ?
FILL IN THE BLANKS here on earth, the pull of gravity on a mass of 1 kg is ......... newtons
Answer:
9.8 Newton
Explanation:
At average gravity on earth (conventionally, g=9.80665m/s2),
a kilogram mass exerts a force of about 9.8 newton
I hope this answer helps you
If an engine can produce 670 J of energy in 1 min, how many watts can it output?
Answer:
11.2Watts
Explanation:
Given parameters:
Energy produced by the engine = 670J
Time taken = 1min = 60s
Unknown:
Number of watts it can output = ?
Solution:
This problem entails finding the power of the engine.
Power is the rate at which work is being done.
So;
Power = [tex]\frac{Work done }{time}[/tex]
Power = [tex]\frac{670}{60}[/tex] = 11.2Watts
Suppose a worker is pushing a
wheelbarrow. He used a force of 625N to
perform 3500J of work on the wheelbarrow.
How far did he push it?
F 5.6 m
G
0.18 m
H
10.2 m
J
14.3 m
Answer:
5.6m
Explanation:
given
Applied force(F)=625N
workdone(w)=3500J
distance travelled by wheel barrow(s)=w/F
= 3500/625
= 5.6m
Calculate the horizontal force that must be applied to a 1,300 kg vehicle to give it an acceleration of 2.6 m/s² on a level road.
500 N
3,380 N
1,302.6 N
0.002 N
The horizontal force must be applied to a vehicle of mass 1300 kg and of acceleration of 2.6 m/s² will be 3380 N. Hence, option B is correct.
What is Acceleration?The rate of change in an object's velocity concerning time is known as acceleration in mechanics. The vector quantity of accelerations. The direction of the net force that is acting on an object determines its acceleration.
Since acceleration has both a magnitude and a direction, it is a vector quantity. Velocity is a vector quantity as well.
According to the question, the given values are :
Mass, m = 1300 kg
Acceleration, a = 2.6 m/s²
Force = 1300 × 2.6 m/s²
F = 3380 N.
So, the force applied will be, 3380 N.
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The Washington monument in our nations capital is 169 m high. What would be the speed of the penny as it hit the ground?
What was the name of the first oil well in the UAE?
A.Murban
B.ADNOC
C.Murhabba
D.OLPEC
Answer:
B.ADNOCExplanation:
the Abu Dhabi Petroleum Company
The first commercially viable oil discovery was made at Bab in 1960. In 1962, the company was renamed the Abu Dhabi Petroleum Company. Exports began to flow from the Jebel Dhanna terminal on December 14, 1963.
Answer:
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