e=?
answer this and ill bump your streaks nd junk for brainliest nd whatnot..
Just answer
E=mc2
Formula
E = energy
m = mass
c = the speed of light
Hich type of electromagnetic waves are dangerous enough to be used to kill cancerous cells? gamma rays visible light infrared light microwaves
Answer:
gamma rays
Explanation:
Electromagnetic waves is a propagating medium used in all communications device to transmit data (messages) from the device of the sender to the device of the receiver.
Gamma rays is a type of electromagnetic waves that are dangerous enough to be used to kill cancerous cells.
In the electromagnetic spectrum, gamma rays are known to have the greatest amount of energy and shortest wavelength among the wave particles. They are generally produced through the disintegration of radioactive elements.
Answer:
A. Gamma rays
Explanation:
Proof:
I need the answer please
Answer:
,1) point B
2) point A
I hope it's helps you
What is the unit for efficiency?
What is the biggest number the
efficiency can be?
How do you work out the % efficiency?
Answer:
Efficiency has no physical units (example .85 = 85%)
The largest number would be 1 or 100%
An example of efficiency is: work out/work in
or (work in - work lost to friction) / work in would be an example of the efficiency of the process
A concave shaving mirror has a radius of curvature of 25.0 cm. For each of the following cases, find the magnification and determine whether the image formed is real or virtual and upright
or inverted,
(a) an upright pencil placed 46.0 cm from the mirror
(b) an upright pencil placed 5.0 cm from the mirror
(a) The magnification is less than 1, the image is smaller than the object. Therefore, the image is real, inverted, and smaller than the object. (b)The magnification is less than 1 in magnitude, the image is also smaller than the object. Therefore, the image is virtual, inverted, and smaller than the object.
What do you understand by magnification?In mirrors, magnification refers to the degree to which an object's size appears to be larger or smaller when reflected in a mirror. The magnification of a mirror is determined by its curvature and distance from the object being reflected.
We can use the mirror equation and magnification formula to solve the problem:
Mirror equation:
1/f = 1/do + 1/di
Magnification formula:
m = -di/do
where
f = focal length of the mirror
do = object distance from the mirror
di = image distance from the mirror
m = magnification
Given:
Radius of curvature, R = 25.0 cm (since the mirror is concave, R is negative)
focal length, f = R/2 = -12.5 cm
(a) For an upright pencil placed 46.0 cm from the mirror:
do = 46.0 cm
Using the mirror equation, we can solve for di:
1/f = 1/do + 1/di
1/-12.5 = 1/46.0 + 1/di
di = -17.2 cm
Since di is negative, the image is formed behind the mirror, which means it is real. Also, the magnification is:
m = -di/do = -(-17.2 cm)/46.0 cm = 0.374
Since the magnification is less than 1, the image is smaller than the object. Therefore, the image is real, inverted, and smaller than the object.
(b) For an upright pencil placed 5.0 cm from the mirror:
do = 5.0 cm
Using the mirror equation, we can solve for di:
1/f = 1/do + 1/di
1/-12.5 = 1/5.0 + 1/di
di = 3.33 cm
Since di is positive, the image is formed in front of the mirror, which means it is virtual. Also, the magnification is:
m = -di/do = -3.33 cm/5.0 cm = -0.666
Since the magnification is negative, the image is inverted. Since the magnification is less than 1 in magnitude, the image is also smaller than the object. Therefore, the image is virtual, inverted, and smaller than the object.
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what are four forms of energy
Answer:
The four forms of energy are:
1. Kinetic Energy
2. Radiation Energy
3. Potential Energy
4. Chemical Energy
Explanation:
Above are listed the four main types of energy. Hope this helps! :)
Forces between particles increase as the particles move faster and farther apart.true or false
Answer:
True
Explanation:
When a charge moves between
two points that have a potential
difference of +12.0 V, its electric
potential energy increases by
0.418 J. What is the amount
of the charge?
Include the correct sign, + or -
(Unit = C)
Answer:
+ 0.07 C
Explanation:
From the question given above, the following data were obtained:
Potential difference (V) = 12 V
Energy (E) = 0.418 J
Charge (Q) =?
The energy (E) , potential difference (V) and charge (Q) are related by the following equation:
E = ½QV
With the above formula, we can obtain the charge as follow:
Potential difference (V) = 12 V
Energy (E) = 0.418 J
Charge (Q) =?
E = ½QV
0.418 = ½ × Q × 12
0.418 = Q × 6
Divide both side by 6
Q = 0.418 / 6
Q = + 0.07 C
Answer:
.0348
Explanation:
right on Acellus
explain in 2-3 sentences how a genotype determines a phenotype!
Will give b to the best one
Answer:
Genotypes are determined by tests. Genotype and phenotype sound the same but mean different things. The phenotype is determined by your genotypes and by your genes or traits, like hair color or type, eye shape and color, body and height. Were all unique, even identical twins, based on the way they look or act. Your uniqueness is based on your genetic make-up, that we inherited from our parents.
Is this better?
Brainliest please!
Which statements explain the relationship between mass, velocity and kinetic energy? Consider the equation to calculate kinetic energy: KE = ½mv2
1. Kinetic energy increases if either the mass or the velocity of the object increases or if both increase.
2. Kinetic energy decreases if either the mass or the velocity of the object increases or if both increase.
3. Kinetic energy decreases if either the mass or the velocity of the object decreases or if both decrease.
4. Kinetic energy increases if either the mass or the velocity of the object decreases or if both decrease
Answer:
statement 1
Explanation:
When mass increases,KE increases and when mass decreases, KE also decreases
Which best describes the effect of force on the motion of an object
Answer:
change of speed or direction
Can an object have both kinetic energy and gravitational potential energy? Explain.
What types of evidence are used to support The Big Bang theory?
Answer:
Hubble's Discovery
cosmic microwave background radiation
Answer:
Three main pieces of evidence for the Big Bang theory are the red-shift of light, cosmic background radiation and types of elements.
Explanation:
Two major scientific discoveries provide strong support for the Big Bang theory: • Hubble's discovery in the 1920s of a relationship between a galaxy's distance from Earth and its speed; and • the discovery in the 1960s of cosmic microwave background radiation.
Read the map key. Predict which location would expect to have the most extremes in average annual temperatures.
A.
B.
C.
D.
Answer:
D is the answer
Explanation:
Yo can someone help this question is for 20 points : P pls solve
Answer:
10 points u liar so i wont answer
Explanation:
: where are you likely to find a cooling plant located in the duckwork? A. single family home B. A large apartment C. large factory D. A medium sized offices
Answer:
Option C
Explanation:
In a large sized factory, it is essential to create cooling system based on duct work because it can then be able to regulate cooling of any section of the factory from one place. Also, ductwork cooling is preferred in large spaces such as big offices building, towers, factories etc.
Hence, option C is correct
how important is knowing and understanding the nature of the tasks and the function of a tool to successfully accomplish a specific task?
Explanation:
Management is important in every organization for smooth operation, development, and growth, coordination, optimum use of resources, etc. Functions of management include planning, organizing, staffing, directing and controlling.
A 188 W motor will lift a load at a rate of 0.065 m/s. How heavy of a load can the motor
lift at this rate?
Answer:
2892.31 N
Explanation:
Applying,
P = F×v................ Equation 1
Where P = power of the motor, F = Weight of the load the motor can lift, v = velocity
make F the subject of the equation
F = P/v.............. Equation 2
Given: P = 188 W, v = 0.065 m/s
Substitute into eequation 2
F = 188/0.065
F = 2892.31 N
Hence the weight of the load is 2892.31 N
1.
If a force of 40N is applied for 0.2 sec
to change the momentum of a
volleyball, what is the impulse?
Answer:
J = 8 kg-s
Explanation:
Given that,
Force, F = 40 N
Time, t = 0.2 s
We need to find the impulse. We know that,
Impulse, J = F×t
So,
J = 40 × 0.2
J = 8 kg-s
So, the impulse is 8 kg-s.
A scooter is moving with a speed of 18 m/s. Its mass is 20 kg. What is the
magnitude of its momentum?
A. 360 kg.m/s
B. 2 kg-m/s
C. 3600 kg.m/s
D. 1.1 kg.m/s
A scooter is moving with a speed of 18 m/s. Its mass is 20 kg. What is the magnitude of its momentum?
A. 360 kg.m/s
B. 2 kg.m/s
C. 3600 kg.m/s
D. 1.1 kg.m/s
Answer:-Given:-Speed (v) of a scooter = 18 m/s
Mass (m) = 20 kg
To Find:-Magnitude of its momentum (p) = ?
Answer:-Since, we know that,
p = mv
So,
p = 20 kg × 18 m/s
p = 360 kg.m/s
[tex] \therefore [/tex] The correct option is (A) 360 kg.m/s The magnitude of its momentum is 360 kg.m/s. [Answer]A car is traveling at 120 kilometers per hour with 35,000 joules of kinetic energy on the freeway when it suddenly applies its brakes and comes to a screeching stop. How much of the original 35,000 joules of energy is left?
Answer:
0 J is left (No amount of the original 35000 J energy is left)
Explanation:
From the question
Kinetic Energy (K.E) = 1/2mv²................... Equation 1
Where m = mass of the car, v = velocity of the car.
make m the subject of the equation.
m = 2K.E/v²..................... Equation 2
Given: K.E = 35000 Joules, v = 120 km/h = (120×3600/1000) = 432 m/s
Substitute these values into equation 2
m = (2×35000)/432²
m = 0.375 kg.
If a brake is suddenly apply,
Then, the velocity of the car = 0 m/s.
Therefore,
K.E = 1/2(0.375×0²)
K.E = 0 J.
From the baove analysis, No amount of the original 35000 J energy is left.
Name a device that transforms electrical energy to sound energy. ( it may also produce thermal (heat) energy)
the answer is speaker it transform electrical energy into sound energy
Answer:
Lightbulb.
Electric stove element.
Electric space heater.
lightning but it's not a device
Explanation:
Lightning converts electrical energy into light, heat and sound energy
The force you apply to a machine is called the what force?
Answer:
When you use a machine, you apply force to the machine. This force is called the input force. The machine, in turn, applies force to an object. This force is called the output force.
The force you apply to a machine is called the effort force.
What is a machine?A machine is a device that is designed to make work easier by changing the direction or magnitude of a force. Machines can be simple, like a lever or pulley, or complex, like an engine or computer.
The basic principle behind all machines is the idea of mechanical advantage, which allows us to do more work with less effort by trading off the force for distance.
The efficiency of a machine is a measure of how much of the input energy is converted into useful output work.
The efficiency of a machine is calculated as the ratio of output work to input work, expressed as a percentage:
Efficiency = (Output work / Input work) x 100%
Output work refers to the amount of work that is done by the machine,
input work is the energy that is put into the machine to make it work.
The difference between the two is the energy that is lost to friction, heat, or other inefficiencies.
Mechanical advantage is a measure of the amplification of force achieved by a machine. It is defined as the ratio of the output force(Load) to the input force (effort). A machine with a mechanical advantage greater than 1 will make it easier to do work by amplifying the force applied to it.
The mechanical advantage of a machine can be calculated using the following formula:
Mechanical Advantage = Output Force(load) / Input Force(effort)
The velocity ratio is a measure of how much the speed of the machine is changed relative to the input speed. It is defined as the ratio of the distance moved by the effort or input force to the distance moved by the load or output force. Velocity ratio is commonly used in the analysis of machines such as pulleys and gears.
The velocity ratio of a machine can be calculated using the following formula:
Velocity Ratio = Distance moved by effort force / Distance moved by load force
Here in the question,
The force you apply to a machine is called the effort force. The effort force is the force applied to a machine, such as a lever or a pulley, in order to move an object or overcome resistance.
In simple machines, the effort force is used to overcome a load or resistance, which is the force that opposes the movement of the object being moved.
The relationship between the effort force and the load or resistance is often described in terms of mechanical advantage, which is the ratio of the output force to the input force. By applying a smaller effort force, a machine can increase its mechanical advantage and make it easier to move a larger load or overcome a greater resistance.
Hence the force we applied to a machine is called effort force.
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transformation of energy torch light by a battery
Answer:
electrical energy into light energy.
hope it helps.
Answer:
electrical energy to light energy
is the correct answer
hope it is helpful to you
and the above answer is correct
Neutrons have a
charge______.
Answer here
Answer:
neutral
Explanation:
Witch of the following is the correct definition of convention
A. The transfer of heat by currents
B. The transmission of heat across matter
C. The transmission of heat across empty space
D. The electromagnetic radiation from the surface of an object witch is due to the objects temperature
Answer:
A is the answer .(A) is correct
Why was Roemer's measurement of the speed of light inaccurate?
a) because man's reaction time was much slower than the speed of light
b) because the eclipses of Jupiter's were not regular enough
c) he did not know the accurate diameter of the Earth's orbit
A force of 24 Newtons acts on an object for 2 seconds. What is
the amount of the impulse?
O 26Ns
O 48 Ns
0 22Ns
O 12Ns
If a machine increases force it must apply the force over a long distance? True or false
Answer: The machine must apply the force over a shorter distance. That's because a machine doesn't change the amount of work and work equals force times distance. Therefore, if force increases, distance must decrease
FALSE
HOPE THIS HELPS
11 points!!!
what happened when glucose reacts with air?
