Answer:
7.35 J
Im assuming, upon answering the question, that the gravity in this scenario is 9.8? As 9.8 is the gravitational force upon the earth.
NEED HELP ASAP !! WILL GIVE BRAINLEIST !!
Answer:
53775
Explanation:
ke= 0.5mv(2)
= 0.5 x 478 x 15(2)
53775
Which color of visible light has a shorter wavelength than blue light? O A. Red O B. Green O C. Violet OD. Orange A
Answer:
It's violet........
Explanation:
This was right for me.
The color of visible light that has a shorter wavelength than blue light is Red. The correct option is A.
What is electromagnetic spectrum?The electromagnetic spectrum consists of the range of all types of EM radiation. Radiation is packet of energy that travels and spreads out. It has radio waves, infrared waves and visible light waves, ultraviolet rays and microwaves.
They possess high energy even to penetrate deep within the material. electromagnetic spectrum ranges from longer wavelength and less frequency to shorter wavelength and high frequency.
The light with higher wavelength is Blue and the shorter wavelength is Red and the rest of all spectrum colors are in between.
Thus, the correct option is A.
Learn more about electromagnetic spectrum.
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What is the kinetic energy of a 90 kg mass that is moving with a velocity of 6 m/s?
Answer:
The kinetic energy of a 90 kg mass that is moving with a velocity of 6 m/s is 1620 J.
Explanation:
Given
Mass m = 90 kgVelocity v = 6 m/sTo determine
Kinetic Energy E = ?The kinetic energy (K.E) of a body of mass of a 90 kg mass that is moving with a velocity of 6 m/s can be calculated using the formula
[tex]K.E=\frac{1}{2}mv^2[/tex]
where
m is the mass (kg) v is the velocity (m/s)K.E is the Kinetic energy (J)substituting m = 90 and v = 6 in the formula
[tex]K.E=\frac{1}{2}mv^2[/tex]
[tex]K.E=\frac{1}{2}\left(90\right)\left(6\right)^2[/tex]
[tex]=\frac{1}{2}\left(90\right)\cdot \:36[/tex]
[tex]=1620[/tex] J
Therefore, the kinetic energy of a 90 kg mass that is moving with a velocity of 6 m/s is 1620 J.
Explain how a helicopter lifts itself up, from a Newton's 3rd Law perspective,
Do the atoms in salt follow a pattern
Answer:
Explanation:
Yes, the atoms in a salt do follow a pattern knows as crystalline pattern or crystalline structure. It means it has an ordered arrangement of atoms or ions. As salt is an ionic compound of Sodium and Chlorine, it is formed through ionic bond. This pattern keeps on repeating for each molecule of NaCl
Answer:
yes they do crystalline pattern as well as othe ionic compounds.
What is the unit of work? (select all that apply) *
force
Kg*m/s^2
kg*m^2/s^2
joule
A lastname
none of the above
Answer:
Joule is the answer
Please give me brainleast
Joule is the unit of work .
What is meant by work ?
Activity that a person habitually engages in to earn a living is activity that persons looking for job engage in.
Activity in which one utilises strength or faculties to do or do anything. a particular duty, responsibility, function, or assignment that often forms a component or stage of a bigger action.
Thus, Joule is the SI unit of work (J). The work accomplished by a force of one newton creating a displacement of one metre is known as a joule.
To learn more about Joules, refer to the below link:
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One role of a producer in a food chain is to provide? A) water for plants B) sunlight for plants C) nutrients for animals D) shelter for animals
Answer:
Nutrients for animals
Explanation:
Producers are organisms that produce their food, they do not need to depend on other animals for their food. They possess photosynthetic properties that enable them to produce their food.
These set of organisms are located at the bottom of the food chain, they can convert components like water, sunlight and air into carbohydrate through the unique process of photosynthesis.
Without these producers, the food chain would not exist as they form the base and foundation of the food chain, some lower animals depend on them as their source of food.
PLEASE HELP ME I HAVE NO IDEA WHO JAKIE ROBINSON IS...
1.) Why is Jackie Robinson an American hero?
2.) What do you admire about Mr.Robinson
3.) If Jackie Robinson was alive today, what do you think he will have to say?
Answer:
ch 46umm nym m m m m hj hj hj
Explanation:
2. How much energy does a 5 kg tennis ball have
that is sitting on a shelf that is 2m high?
Answer:
GPE= h a m
GPE= (2)(9.8)(5)
GPE=98 J
how do i calculate this?
CAR 1
Momentum = Mass/Velocity
M = 2100/20
M = 105 m/s^2
CAR 2
Momentum = Mass/Velocity
M = 2100/30
M = 70 m/s^2
A roller coaster car rapidly picks up speed as it rolls down a slope. As it starts down the slope, its speed is 4 m/s. But 3 seconds later, at the bottom of the slope, its speed is 22 m/s. What is its average acceleration?
plz, show the equation.
Answer:
6m/s²
Explanation:
Given parameters:
Initial velocity = 4m/s
Time = 3s
Final velocity = 22m/s
Unknown:
Average acceleration = ?
Solution:
Acceleration is the rate of change of velocity with time taken.
Acceleration = [tex]\frac{Final velocity - Initial velocity }{Time}[/tex]
Acceleration = [tex]\frac{22 - 4}{3}[/tex] = 6m/s²
A 32 kg object has a momentum of 480 kg m/s northward. What is the
object's velocity?
O A. 15,360 m/s
B. 15 m/s
O C. 448 m/s
OD. 0.067 m/s
Answer:
B. 15 m/s
Explanation:
p = m × v
480 = 32 × v
32v = 480
v = 480/32
v = 15 m/s
Answer:
B. 15 m/s
Explanation:
P=MV
480=32×v
v=15m/s
On Distance Displacement Position vs. Time graphs. Velocity vs. Time graphs, and Acceleration vs. Time graphs, which vanable is always on the x-axis? A:Distance/Displacement/Position C:Acceleration B:Time D:Velocity
Answer:
your question dosent make sense?
Explanation:
Answer:
The time is always in the x axis.
Explanation:
a spring is compressed then launches a block vertically. The spring is compressed 15 cm and has a spring constant of 342 N/m. If the block has a mass of 1.4 kg, what is the maximum height it can reach?
Answer:
6.342 m/s. 2).
Explanation:
17. A car traveling with a velocity of 45 m/s and has a mass of 1120 kg. The car has _________
energy. Calculate it
Answer:
[tex]sln \\ given \\ velocity \:(v) = 45ms {}^{ - } \\ mass \: of \: car \: (m) = 1120kg \\ kinetic \: enegy(k.e) = x \\ \\ k.e = \frac{1}{2} MV {}^{2} \\ k.e = \frac{1}{2} \times 1120 \times 45 \\ k.e = 25200j[/tex]
the car has kenotic energy is 2500J
The car will , have the kinetic energy of 1134 kJ. The kinetic energy is found as the product of half of mass and the square of velocity.
What is kinetic energy?The energy of the body by the virtue of its motion is known as the kinetic energy of the body. It is defined as the product of half of mass and square of the velocity.
The given data in the problem is;
A car traveling with a velocity,v= 45 m/s
The mass is, m= 1120 kg.
The kinetic energy is found as;
[tex]\rm KE = \frac{1}{2} mv^2 \\\\\ \rm KE = \frac{1}{2} 1120 (45)^2 \\\\\ \rm KE = 1134 \ kJ[/tex]
Hence, the car will , have the kinetic energy of 1134 kJ.
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What is ONE variable that will change the amount of POTENTIAL ENERGY
of a box on the floor?
Answer:
The height or the mass
Explanation:
The one variable that can change the potential energy of a box on the floor is either the height or the mass of the box.
Potential energy is the energy due to the position of a body.
Mathematically;
Potential energy = mass x acceleration due to gravity x height
Therefore, if the mass of the box is changed, the potential energy changes also.
If the position of the box is changed by raising it up, the potential energy changes
UGH PLSSSS HELP WILL GIVE BRAINLIEST, AND 20 POINTS
A nonpolar bond is formed when two atoms share electrons unequally.
Please select the best answer from the choices provided
T
F
Answer:
false
Explanation:
the answer is false bc for a non-polar bond to form the electrons are shared equally...
Pls help with either of these I will give up brainliest
Answer:
1. The bird close to the center
2. 4/25 of the original force.
Explanation:
1. Tangential velocity is v=w*d (in m/s), where w is the rotational speed, commonly denoted as the letter omega (in radians per second). d is the distance from the center of the rotating object to the position of where you would like to calculate the velocity (in meters).
As we can note, the furthest from the center we are calculating the velovity the higher it is, because the rotational velocity is not changing but the distance of the object with respect to the center is. If v=w*d, then the lower the d (distance) the lower the tangential velocity.
2. Take a look at the picture:
We have the basic equation for the gravitational force.
We have to forces: Fg1, which is the original force, and Fg2, the force when the mass and the distance changes.
If we consider that mass 2 didn't change (m2'=m2), mass 1 is four times its original (m1'=4*m1) and distance is 5 times the original (r'=5*r), then next step is just plugging it into the equation for Fg2.
Dividing the original force Fg1 by the new force Fg2 (notice you can just as well do the inverse, Fg2 divided by Fg1) gives us the relation between the forces, cancelling all the variables and being left only with a simple fraction!
The internal carrying force of the 4 volts of the cell in the enclosed circuit is negligible. Find out
1 total resistance
2nd circuit
3 Differential difference between a and c points
Answer:
thaYeah, I kinda dont have an answer for you either... sorry -__-
Explanation:
an iPod rest at a 1.2 m high table how much time does it take to fall to the floor
Answer:
0.49 s
Explanation:
i'm in middle school sorry if i'm wrong.
The time taken for the iPod to fall from the top table is 0.5 s.
The given parameters;
height of the table, h = 1.2The time taken for the iPod to fall from the top table is calculated as follows;
[tex]h = v_0t + \frac{1}{2} gt^2\\\\h = 0 + \frac{1}{2} gt^2\\\\h = \frac{1}{2} gt^2\\\\gt^2 = 2h\\\\t^2 = \frac{2h}{g} \\\\t = \sqrt{ \frac{2h}{g} } \\\\t = \sqrt{ \frac{2\times 1.2 }{9.8} }\\\\t = 0.5 \ s[/tex]
Thus, the time taken for the iPod to fall from the top table is 0.5 s.
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Milk in a hot cup can be cooled by pouring its back and fourth between the bigger cup.How does this action help to cool milk?
Solids in which the atoms have no particular order or pattern are called
Answer:
Amorphous solids are composed of atoms or molecules that are in no particular order. Each particle is in a particular spot, but the particles are in no organized pattern. Examples include rubber and wax. Crystalline solids have a very orderly, three-dimensional arrangement of atoms or molecules
Explanation:
_________ forces exist between objects that are not in contact with each other
Answer:
Gravity as well as electrostatic and magnetic attraction and repulsion provide real life examples of forces being exerted by one object on another without them being in contact with each other. Many children are aware of magnetism and have played with fridge magnets.
Which property of an object changes when an unbalanced force acts on it?
Mass
Inertia
Velocity
Temperature
Answer:
Velocity
Explanation:
When unbalanced forces acts on an object the velocity of the object changes. This is because, unbalanced forces causes a body to accelerate.
Acceleration is the rate of change of velocity with time taken.
An unbalanced force on a body causes a net force greater than zero and this makes the velocity of the body to change.
Therefore, an unbalanced force on a body will cause a change in the velocity of the body.
Answer:
velocity
Explanation:
mhm
TC
Displacement of a particle executing SHM is represented by Y = 0.08 sin 3nt +
metre. Then calculate-
a time period
(d) Time period
(
Minitial phase
wõisplacement
7
(c) Displacement from mean position at t=
36
sec.
Answer:
0.08 sin 3nt +
metre. Then calculate-
a time period
(d) Time period
(
Minitial phase
wõisplacement
7
(c) Displacement from mean position at t=
36
sec.
Explanation:
thats the answer
(a)The weight of two metallic spheres, each of 200 g and radius 4 cm and
10 cm respectively are measured in water and vacuum How will the ratio
of their weights change in water and in vacuum? Explain
To date, Saturn is known to have 13 rings made from which of the following?
A. Dust
B. Dark particles
C. Moons
D. Stars
Answer:
it is believed to be shattered moons, asteroids, and comets, so C
Explanation:
A 10 kg ball is released from the top of a hill. How fast
is the ball going when it reaches the base of the hill?
Approximate g as 10 m/s2 and round the answer to the
nearest tenth.
m/s
hy = 2 m
h = 0.5 m
Answer: 5.5 m/s
Explanation:
5.5 is the answer for edge :)
I WILL GIVE BRAINLEST, PLZ HURRY!!!
Answer: its b because as soon as you go far away from light it get red and dents
Explanation:
A 33 kg child on a swing has a potential energy of 720 J with respect to the ground. What is the child’s height above the ground? please answer soon
Answer:
h = 2.22 m
Explanation:
Using the international system, we know that the gravity of the earth is 9.8 m / s².
then, we have as data:
Potential Energy (Ep) = 720 JMass (m) = 33 kgGravity (g) = 9.8 m/s²Height (h) = ?Use formula:
[tex]\boxed{h=\frac{Ep}{m*g}}[/tex]Replace:
[tex]\boxed{h=\frac{720J}{33kg*9.8\frac{m}{s^{2}}}}[/tex]Joules descompose:
[tex]\boxed{h=\frac{720N*m}{33kg*9.8\frac{m}{s^{2}}}}[/tex]Solve the multiply of mass and gravity:
[tex]\boxed{h=\frac{720N*m}{323.4kg*\frac{m}{s^{2}}}}[/tex]Multiply the units. Knowing that kg * m/s² = N, so:
[tex]\boxed{h=\frac{720N*m}{323.4N}}}[/tex]Simplify the Newtons (N), and it divides:
[tex]\boxed{h=2.22\ m}[/tex]What is the child’s height above the ground?
The child's height above the ground is 2.22 meters.