Answer:
An alpha ray is a stream of alpha particles. An alpha particle consists of two protons and two neutrons bound together into a particle identical to a helium nucleus.Required
Which of these is called a meteor? *
1: a chunk of metallic or stony matter found in space
2: a chunk of metallic or stony matter found on Earth's surface
3: a streak of light caused by something entering Earth's atmosphere
What is the answer?
Answer:
lk
Explanation:
2
Diffraction is useful in which of the following fields?
a. calculus
b. anthropology
c. astronomy
d. astrology
PLS HELP WILL MARK BRAINLIEST IF RIGHT NEED IMMEDIATELY PLEASEEEEE
According to O*NET, what are some common work activities performed by Psychiatrists? Check all that apply.
assisting and caring for others
making decisions and solving problems
performing general physical activities
handling and moving objects
inspecting equipment and structures
getting information
Answer:
Explanation:
Prescribe medications.
Prescribe treatments or therapies.
Treat patients using psychological therapies.
Collect medical information from patients, family members, or other medical professionals.
Record patient medical histories.
Develop medical treatment plans
Answer:assisting and caring for others
making decisions and solving problems
getting information
Explanation:
I'm pretty sure about the answer. Thank you
what does a steep slope line mean? in science
Answer:
Simply put, slope refers to the steepness of a line. The larger the slope, the steeper the line. Slope is often referred to as 'rise over run' because it is calculated by the change in the vertical (rise) divided by the change in the horizontal (run). ... For example, a high value of slope means a very steep line.
A bungee jumper starts with 1000 J in their GPE store. After they jump they fall and are brought to a stop with the bungee cord. With the cord fully stretched what is the energy in the EPE store?
Answer:
energy is equal to 1000 J
Explanation:
When the jumper is in the tent, he has a given height, this height gives him a gravitational potential energy, which forms his initial mechanical energy of 1000 J. After jumping, this energy is converted into elastic energy of the rope plus a remainder of potential energy gravitational, it does not reach the ground, but as the friction is negligible the total mechanical energy is conserved, therefore its energy is equal to 1000 J
This is a case of energy transformation, but the total value of mechanical energy does not change
this is life science
Select the correct answer.
Which diagram represents an object in equilibrium?
ОА.
applied
force = 20 N
force due to
friction = 15 N
OB.
applied
force = 20 N
force due to
friction = 20 N
OC.
applied
force = 15 N
force due to
friction = 25 N
OD.
applied
force = 30 N
force due to
friction = 20 N
ОЕ.
applied
force = 30 N
force due to
friction = 15 N
Reset
Next
My
Answer:
B
Explanation:
The force and friction cancel each other.
20N - 20N = 0N acting on the object.
Which is NOT a part of an electric motor?
a.
armature
b.
brushes
c.
commutator
d.
slip ring
A boxer pushes on a 25 kg heavy bag which is attached to the ceiling until it makes an angle of 36 degrees to the vertical. How much force must the boxer exert on the bag?
Answer:
198.20 N
Explanation:
Given that,
Mass of a heavy bag, m = 25 kg
The bag is attached to the ceiling until it makes an angle of 36 degrees to the vertical.
We need to find the force must the boxer exert on the bag. The force acting on the bag is given by :
[tex]F=mg\cos\theta\\\\=25\times 9.8\times \cos(36)\\\\=198.20\ N[/tex]
So, the required force is 198.20 N.
9th grade science here, please help will mark brainliest
Answer:
positive. hope this helped
Metamorphic rock occurs when you take any other type of rock and put them under ________ and ______________, and they twist and meld together.
Answer:
This question appear incomplete
Explanation:
This question appear incomplete because of the absence of options. However, metamorphic rocks are rocks that are formed from other pre-existing rocks under heat and pressure (both are usually high), causing them to twist and melt together. Metamorphism simply means a change in form of something and that's what happens here also.
Which type of wave forms at the boundary between air and water when you
drop a rock into a pond?
A. Electromagnetic
B. Surface
C. Longitudinal
D. Transverse
help with this please
Answer:
c
Explanation:
because because because
Answer:
b i believe
Explanation:
Which unit of measurement is most appropriate for measuring the length of your computer screen?
Answer:
Inches or Centimeters
Explanation:
Inches or centimeters are the most appropriate units of measurement for the computer screen because they are in the form of whole figures that can be easily comprehended. Usually the width of computer screens span from 10 to 20 inches.
Conversion of a 15inches computer to meters;
1inch=0.0254meter
15inches= ?
15inches*0.0254/1
=0.381meters
The above is a very small figure which might be hard for most people to fathom or visualize.
The moon has a mass of 7.34 . 1022 kg and a radius of 1.74. 10 meters. If you have a mass of 66
kg, how strong is the force between you and the moon?
Answer: F = 106.72 N
Explanation: Newton's Law of Universal Gravitation states that two masses attract each other by a force pointing in a straight line to the center-of-mass of both masses.
It is directly proportional to the masses and inversely proportional to the square of their distance, represented as:
[tex]F=G\frac{m_{1}m_{2}}{r^{2}}[/tex]
where
G is gravitational constant whose value is 6.67x10⁻¹¹ N(m/kg)²
m are masses in kg
r is distance in m
The force between the moon and a person with mass of 66kg is:
[tex]F=6.67.10^{-11}\frac{66(7.34.10^{22})}{(1.74.10^{6})^{2}}[/tex]
[tex]F=\frac{3231.215.10^{11}}{3.0276.10^{12}}[/tex]
F = 106.72 N
The force between a person with mass of 66kg and the moon is 106.72 N.
The strength of the force between person and the moon is equal to 106.6 Newton.
Given the following data:
Mass of moon = [tex]7.34 \times10^{22}\; kg[/tex]Mass of person = 66 kgRadius = [tex]1.74\times 10^6\; meters[/tex]Scientific data:
Gravitational constant = [tex]6.67\times 10^{-11}[/tex]To determine the strength of the force between person and the moon, we would apply Newton's Law of Universal Gravitation:
Newton's Law of Universal Gravitation states that the force of attraction (gravitational force) acting between planet Earth and all physical objects is directly proportional to the mass of planet Earth, directly proportional to the mass of the physical object and inversely proportional to the square of the distance separating the Earth's center and that of the physical object.
Mathematically, Newton's Law of Universal Gravitation is given by the formula:
[tex]F = G\frac{M_1M_2}{r^2}[/tex]
Where:
F is the gravitational force.G is the gravitational constant.M is the mass of objects.r is the distance between centers of the masses.Substituting the given parameters into the formula, we have;
[tex]F = 6.67\times 10^{-11} \frac{(7.34 \times 10^{22} \times 66)}{(1.74 \times 10^{6})^2}\\\\F = 6.67\times 10^{-11} \frac{(4.84 \times 10^{24}) }{3.03 \times 10^{12}}\\\\F = \frac{3.23 \times 10^{14} }{3.03 \times 10^{12}}[/tex]
Force, F = 106.6 Newton.
Read more on gravitational force here: https://brainly.com/question/21511416
Glider A of mass 0.355 kg moves along a frictionless air track with a velocity of 0.095 m/s. It collides with glider B of mass 0.710 kg moving in the same direction at a speed of 0.045 m/s. After the collision, glider A continues in the same direction with a velocity of 0.035 m/s. What is the velocity of glider B after the collision?
Answer:
vB' = 0.075[m/s]
Explanation:
We can solve this problem using the principle of linear momentum conservation, which tells us that momentum is preserved before and after the collision.
Now we have to come up with an equation that involves both bodies, before and after the collision. To the left of the equal sign are taken the bodies before the collision and to the right after the collision.
[tex](m_{A}*v_{A})+(m_{B}*v_{B})=(m_{A}*v_{A'})+(m_{B}*v_{B'})[/tex]
where:
mA = 0.355 [kg]
vA = 0.095 [m/s] before the collision
mB = 0.710 [kg]
vB = 0.045 [m/s] before the collision
vA' = 0.035 [m/s] after the collision
vB' [m/s] after the collison.
The signs in the equation remain positive since before and after the collision, both bodies continue to move in the same direction.
[tex](0.355*0.095)+(0.710*0.045)=(0.355*0.035)+(0.710*v_{B'})\\v_{B'}=0.075[m/s][/tex]
why is g called the universal gravitational constant
Explanation:
Hey there!
Universal gravitation constant (g) is the force of gravitation produced between two bodies of unit mass each separated by unit distance between their centers. The value of universal gravitation constant (g) is 6.67 Nm²/kg², which is constant all over the world. So, that's why it is called universal gravitation constant.
Hope it helps....
A beaver runs at a speed of 2.0\,\dfrac{\text m}{\text s}2.0 s m 2, point, 0, start fraction, start text, m, end text, divided by, start text, s, end text, end fraction with 45\,\text J45J45, start text, J, end text of kinetic energy.
Answer:
22.5kg
Explanation:
Since we not told wat to find, we can as well find the mass of the beaver.
Kinetic energy formula is expressed as;
KE = 1/2mv²
m is the mass
v is the speed
Given
KE = 45Joules
v = 2.0m/s
Substitute into the formula and get the mass
45 = 1/2m(2)²
45 = 2m
m =45/2
m = 22.5kg
Hence the mass of the beaver is 22.5kg
A solar cell that transforms 300 J of light energy into 45 J of electrical energy and 255 J of wasted energy. whats the efficiency
Answer:
15%
Explanation:
Step one:
Given data
Energy source= 300J
Useful energy = 45J
Waste energy = 255J
Required
The efficiency of the solar system
Step two:
The efficiency is computed by factoring only the useful work and the energy source
Efficiency= 45/300*100
Efficiency= 0.15*100
Efficiency= 15%
What is the relationship between the frequency of light and refraction?
Answer:
The refractive index of a medium is dependent (to some extent) upon the frequency of light passing through, with the highest frequencies having the highest values of n. It also changes the wave speed, frequency, and wavelength.. Although the wave slows down, its frequency remains the same, due to the fact that its wavelength is shorter. When waves travel from one medium to another the frequency never changes. As waves travel into the denser medium, they slow down and wavelength decreases
Explanation:
Answer:the higher the frequency the greater the index of refraction
Explanation:The index of refraction of any material besides vacuum varies slightly with the frequency of light too soo basically the more or higher the frequency the greater the refraction (index of refraction)
For example
Say you have green or red light which they have lower frequency that blue or purple
So the index of refraction will be lower
If the mass of a box is 200 Kg, with what net force would you use to make the box accelerate 2.4 m/s 2 ?
Answer:
The net force used on the box was 480 N
Explanation:
Mechanical Force
According to the second Newton's law, the net force exerted by an external agent on an object of mass m is:
F = ma
Where a is the acceleration of the object.
The mass of a box is m=200 kg and it's accelerated at a=2.4\ m/s^2 by a net force whose magnitude is:
F = 200 * 2.4 N
F = 480 N
The net force used on the box was 480 N
Question 1 of 11
What are two ways space exploration can improve international relations?
DA By urging countries to compete to achieve goals
DB. By helping countries' economies grow weaker
DC. By encouraging countries to share scientific data
DD. By inspiring countries to work together to solve problems
AnswerC and D
Explanation:
Answer: C & D
Explanation: Aplex
identfy the parts of he atom that are labeied in the
dagram
Label A:
Label B
NEED THE ANSWE ASAP!
Answer :
Label A - nucleus.
Label B- electron cloud.
Explanation :
An atom is the smallest unit of a matter that consist of three subatomic particles which are electrons, protons and neutrons.
The protons and the neutrons are located inside the nucleus or the center of the nucleus where the mass of the an atom is concentrated.
The electrons are located around the nucleus.
The protons are positively charged, the electrons are negatively charged and the neutrons are neutral that means it has no charge.
In the picture, label A shows the nucleus.
Electrons has the ability to revolve around the nucleus in a fixed circular orbit. Electron cloud represents the spreading of the electrons energy.
In the picture, label B shows the electron cloud.
Hence, the label A - nucleus and label B- electron cloud.
Gravity can be described as (2 points)
O a magnetic force found in nature
O the force that moves electrical charges
O the force that repels object with like charges
O the force of attraction between two objects
4. Describe solids and
give an example.
Answer:
A solids molecules are tightly packed to get her and an examle of a sold is a rock
Explanation:
A force has both______ and _______. Question 3 options: Magnitude & Direction Direction & Motion Speed & Impact Speed and Direction
Answer:
A force has both Direction and Motion.
Explanation:
For example, when finding acceleration you take the time and divided it by distance. If the thing you are measuring is going in the positive direction, the acceleration will be positive and if it is going in the negative direction the acceleration will be negative.
Magnitude and Direction
Explanation:
Force is a Vector Quantity
As learned in an earlier unit, a vector quantity is a quantity that has both magnitude and direction. To fully describe the force acting upon an object, you must describe both the magnitude (size or numerical value) and the direction.
Explain how the law of conservation of energy applied to the energy transformations that occur from the outlet charger to the ringing phone
Answer: ELECTRICAL ENERGY to CHEMICAL ENERGY to SOUND ENERGY.
Explanation:
There are laws governing the conservation of energy in physics. The first law of thermodynamics states that in a closed system, energy can neither be created nor destroyed during transformation. With this, the total energy of a given system always remains constant.
This first law of thermodynamics which arouse from special relativity, says that changes in the energy of systems will also coincide with changes in a measure of its energy content.
The ELECTRICAL energy from the outlet charger is transformed and stored as CHEMICAL energy in the battery of the phone. This in turn is converted to SOUND energy when the phone rings.
Ava runs track and field and is a long-distance runner. She has a big race coming up and needs to eat food that will provide her with enough energy to last throughout the race. What food would be best for her to prepare for her race?
A. salad
B. milk
C. apple
D. pasta
Answer:
A. salad
Explanation:
Your best friend comes to you with a problem: He is not doing well in school because he has too much going on after school. He wants to improve his grades without giving up his after-school activities. What are the three general time-management techniques that you can suggest to him?
Answer:
1. Schedule your activities
2. Prioritize the more important tasks
3. Avoid procrastination
Explanation:
Time-management techniques are strategies or methods developed by people to help them effectively manage their time. My best friend in the scenario above cannot effectively manage his time because he has a lot of activities crowding up his time.
To get better in his grades, he should strike a balance between school work and extracurricular activities. He should make a workable schedule where only the most important tasks are prioritized. He should also learn to execute these tasks on time without postponing them.
Answer:
Sample Response: He should decide on a study time that works best for him, create a study schedule, and manage his study sessions by using a daily to-do list
Explanation:
got it right on edge 2021
how many elements does lythium have
Answer:
three 3
Explanation:
