Answer:
b
Explanation:
the earth is moving so it that the stars are moving, but they arnt
Answer:
B
Explanation:
the earth is rotating on its axis smart
in a isovolumetric process the is constant.
Answer:
An isothermal process is a change of a system, in which the temperature remains constant: ΔT = 0.
Explanation:
:)
In the absence of air resistance, the path of a projectile is a(n)
A. Parabola.
B. Arc
C. Polygon
D. Semicircle
Answer:
d
Explanation:
How are igneous rocks formed?
They are formed from cooled magma.
They are hot magma the moment it is expelled from a volcano.
They are formed over many years of pressure and heat within Earth.
They are formed from sediments that collected in ocean beds.
Answer:
What are igneous rocks?
Igneous rocks (from the Latin word for fire) form when hot, molten rock crystallizes and solidifies. The melt originates deep within the Earth near active plate boundaries or hot spots, then rises toward the surface. Igneous rocks are divided into two groups, intrusive or extrusive, depending upon where the molten rock solidifies
Share your thoughts on placing children in daycare for many hours each day while parents are at work.
Answer:
It's terrifying, but a relief that you know your children isn't home alone.
Explanation:
Why, it's because sometimes you don't know what is going on in the daycare. The baby/ the child you gave birth to is in the hands of a random stranger. It's also a relief knowing that at least someone is taking care of your child, or hope to be. Instead of your child, no adult supervision or any people watching your child can result in death, injuries, and more since your child is alone.
You can use the curved part of a spoon as a mirror because it ________ light.
Which best completes the statement?
reflects
refracts
absorbs
enhances
Answer:
Reflects
Explanation:
A metal spoon looks very shiny because its surface is very smooth, which is why it acts like a mirror and reflects light very well.
You can use the curved part of the spoon as a mirror because it reflects light. Thus, the correct option is A.
What is reflection of light?Reflection is the phenomena of light, when the ray of light bounces off an object. If the surface is smooth and shiny, just like a glass, water or polished metal surface, the light will reflect at the same angle as it hit the surface of the object. This is called as specular reflection.
The laws of reflection states that the incident ray, the reflected ray, and the normal ray all lie at the same point of incidence, and lie in the same plane of the surface. And, the angle of incidence is equal to the angle of reflection of light.
Therefore, the correct option is A.
Learn more about Reflection here:
https://brainly.com/question/30270479
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Three statements about connection of cells are given below.
I. Connecting cells in parallel provides more electrical energy to the circuit in every one second
II. Connecting cells in parallel increases lifetime of cells
III. Connecting cells in series decreases lifetime of cells
Which statement(s) is/are wrong?
A. OnlyI B. onlyIII C. IIandIII D. I,IIandIII
Answer:
A. OnlyI- connecting cells in parallel provide more electrical energy to the circuit in every one second
The Stronger the force that is exerted on an object,the ____ the change in velocity will be.
A greater
B lesser
C weaker
D stronger
Answer:
answer is stronger the change in velocity
Can you help me plzz ?
We are given:
Mass of the Crate(m) = 71 kg
Applied force(F) = 577 N
Resolving the applied force:
To solve this problem, we will first make a free-body diagram (attached)
The Applied force has been resolved into 2 components denoted by a thinner line and 'g' is the acceleration due to gravity
We found the values by using basic trigonometry
Finding the Normal Force:
Normal force is equal and opposite to the net force applied on the ground. So, we will subtract the vertical component of the applied force from the weight of the crate.
Normal force = mg - F*Sin(27°)
Normal force = [(71)*(9.8)] - [ (577)(0.454) ] [g = 9.8 m/s²]
Normal Force = 433.84 N
HELPPP BESTIESSS An astronomer is studying two stars that have about the same size and brightness. From the Earth, one of the stars appears very bright in the night sky. The other star appears very faint and dim.
Why does one star appear to be brighter than the other?
A. The Earth is moving toward the brighter star.
B. The Earth is moving toward the dimmer star.
C. The Earth is farther from the brighter star.
D. The Earth is closer to the brighter star.
Answer:
If the stars are about the same size and brightness then the earth must be nearer to the stat that appears brighter, The stars movement, nearer or farther, would only effect the frequency received (redshift).
Answer:
D- The earth is closer to the bright star
Explanation:
If two stars have SAME brightness and size then that means the only point of difference is distance . Earth should be closer to the brighter star for the star to be bright.
I hope im right!!
Please help!
A river flows at a velocity of 3 km/h relative to the riverbank. A boat moves downstream at a velocity of 15 km/h relative to the river. What is the velocity of the boat relative to the riverbank?
Classify the following as a type of kinetic or potential energy. Check the
appropriate box.
Help please..
Answer:
Kinetic and potential
potential (didnt say its moving)
Kinetic and potential
kinetic
kinetic
kinetic
potential
kinetic and potential
kinetic (might have potential)
kinetic
write the word equation for the breaking down of the hydrogenperoxide
Suppose the equation of the velocity of a car at any given time is Vx= 30m/s+(2.5m/s^3)t^2 Find the change in the velocity of the car during time t1= 4s and t2= 5.5s (a) 70.00 m/s (b) 105.63 m/s (c) 35.63 m/s (d) 175.63 m/s
Answer:
time=4, answer choice A
time=5.5, answer choice B
Explanation:
This is taken from the kinematic equation, v=vo+(1/2)at^2
Velocity at time 4 = 30+(2.5)(4)^2
Velocity at time 5.5 = 30+(2.5)(5.5)^2
Velocity at time 4 seconds = 70 m/s
Velocity at time 5.5 seconds = 105.63 m/s
what you think is between the particles that make up a substance
Answer:
There is always space (vacuum) between particles. The particles are small objects that exist in (sometimes vast) empty space. In gas particles there's a lot more space between the particles; the particles fly around in vacuum, bumping into each other.
Use the worked example above to help you solve this problem. A ball is thrown upward from the top of a building at an angle of 30.0° to the horizontal and with an initial speed of 15.0 m/s. The point of release is h = 46.0 m above the ground.
(a) How long does it take for the ball to hit the ground?
(b) Find the ball's speed at impact.
(c) Find the horizontal range of the ball.
Answer:
B
Explanation:
Fig on the left shows a stationary source emitting the waves. Fig on the right shows the waves in the medium as the source starts moving towards the left. If you were an observer to the left of the source, what would you observe about the wavelength and the frequency of the waves?
A. Wavelength-Increase, Frequency-Decrease
B. Wavelength-Increase, Frequency-Increase
C. Wavelength-Decrease, Frequency-Increase
D. Wavelength-Decrease, Frequency-Decrease
Two charged particles, with charges q1 = q and q2 = 4q are located at a distance d = 2cm apart on the x axis A third charged particle, with charge q3 = q is placed on the x axis such that the magnitude of the force that charge 1 exerts on charge 3 is equal to the force that charge 2 exerts on charge 3. Find the position of charge 3 when q = 10n C
Answer:
0.667 cm
Explanation:
|F_1on3| = |F_2on3|
k×q1×q3/x^2 = k×q2×q3/(d-x)^2
q1/x^2 = q2/(d-x)^2
(d-x)^2/x^2 = q2/q1
(d-x)/x = sqrt(q2/q1)
(2 - x)/x = sqrt(4×q/q)
(2 - x)/x = 2
2 - x = 2x
2 = 3x
x = 2/3
x= 0.667 cm
PLEASE HELP 45 POINTS!!!! BRAINLIST IF YOU GIVE GOOD REAL ANSWER!!!
Answer:
what is the question?
Explanation:
Define normal force in words
Answer:
The normal force is the force that surfaces exert to prevent solid objects from passing through each other. If the object is at rest, the net force on the object is equal to zero. Therefore, the downward force (weight) must be equal to the upward force (normal force).
Tions: Encircle the letter that corresponds
you answer
Homest
mga kab
1. The framework of a house provides the house with both support and structure allowing it to
stand. Which system provides those functions in humans?
A. Skeletal System
C. Integumentary System
B. Muscular System
D. Digestive System
2. What 2 systems are MOST DIRECTLY responsible for your ability to stand up for long periods of time, walk,
and sit down?
A. Integumentary and Excretory C. Circulatory and Respiratory
B. Digestive and Reproductive D. Musculoskeletal
3. The soft, fatty tissue that fills the inside of most bones and makes red blood cells and many white blood
cells.
A. Bone marrow B. Fat
C. Heart
D. Skin
4. Skin, hair, and nails make up the
system.
A. muscular system
C. digestive system
HONE
B. integumentary system
D. skeletal system
5.
the body's largest organ, contains melanin, which gives skin color that protects it from
the sun's rays.
A. Skin
B. Tendon
C. Nerves
D. Joint Ignition
6. If the portion of the cerebellum was damaged as a result of trauma, what effect would this person
likely experience?
A. rapid breathing
C. trouble in maintaining balance
B. changes in body temperature D. partial or incomplete memory loss
7. It is involved in the fight or flight response.
A. parasympathetic B. autonomic C. sympathetic D. somatic
8. Which of the following organs is made up the central nervous system?
A. muscles and bones
C. interneurons and motor neurons
B. brain and spinal cord D. sensory neurons and motor neurons
9. The following are parts of neuron, EXCEPT
A. nucleus
B. cell body
C. axon
D. dendrites
10. Which of the following is not controlled by the cerebrum.
A. judging a beauty contest C. thinking of your assignment
B. smelling a bad odor
D. Breathing
11. The main function of musculoskeletal system is to
A. support the body, allowing motion, and protecting vital organs
B. release waste product from the body
C. maintain heat and temperature of the body
D. send and receive different stimuli from the sense organs
12. Muscles in the body work
A. individually
B. in group
C. in pairs D. as needed
13. The bones provide
A. food for the body.
B. proper nourishment.
C. stability of the body.
D. protection against all kinds of diseases.
14. The skeletal portion of the system serves as the main storage of
Answer:
1. A Skeletal System
2. D Musculoskeletal System
3. A Bone Marrow ( specifically red bone marrow where red blood cells produce and yellow bone marrow where fats and other tissues produce)
4. B Integumentary System
5. A Skin
6. C (Cerebellum is a part of the brain responsible for making postural adjustments in order to maintain balance).
7. C
8. B
9. A
10. D (Breathing was controlled by Medulla Oblongata)
11. A
12. B
13. B
14. Minerals specifically calcium and phosphorus.
of 72.0 units. If the mass of Object 1 is halved AND the mass of object 2 is tripled, then the new gravitational force will be units.
Answer:
youtg jugre contact coming call details
An object that has a mass of 36.0kg is pushed along a horizontal surface with a force of 85.0N. IF
the force of friction is 72.0N, what is the magnitude of the acceleration of the object?
Answer:
0.36m/s^2
Explanation:
a=f/m
.....hhhep
Truee or falsee???
True(?
I'm not sure but I think it should be
the resistance of an object to change its dynamic state called
HELPPPP
PSYW - Please Show Your Work
A body of mass 0.150 kg has its temperature increased by 5.00°C when 385 J of energy
is provided to it.
Calculate the body's specific heat.
what is the frequency of a wave that had a wavelength of 15m and is traveling at 135 m/s
how to the eath turn
Explanation:
Earth rotates in prograde mation.As viewed from the north pole star Polaris.Earth turns counterclockwise,, the north pole is point in the northern,, Hemisphere where Earth's Axis of rotation meets it's surface
it turn from west to est
find the instantaneous velocity at 1 s . can anyone help with c-h!!!
9. When Earth, the sun, and the moon are perfectly aligned, with Earth in the middle, which type of eclipse occurs? (1 point)
A. a partial lunar eclipse
B. a total lunar eclipse
C. a partial solar eclipse
D. a total solar eclipse
Answer:
B. a total lunar eclipse
When Earth, the sun, and the moon are perfectly aligned, with Earth in the middle, then the type of eclipse that occurs would be a total lunar eclipse, therefore the correct answer is option B.
What is an eclipse?When a planetary body passes in front of another planetary body and is visible from a third planetary body, an eclipse is created.
Based on the relative positions of the sun, moon, and earth at the time of the eclipse, there are various types of eclipses in our solar system.
For instance, a lunar eclipse occurs when the earth passes between the moon and the sun.
The sort of eclipse that would occur when Earth, the sun, and the moon are exactly lined up, with Earth in the middle, is a complete lunar eclipse, hence option B is the right response.
To learn more about the eclipse from here, refer to the link;
brainly.com/question/4279342
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Why did Jim Bridger build a fort along the Oregon Trail?
AGave travelers a safe spot to hide from bears
B Offered protection to explorers against the British
C Rest stop and good spot for trading post
D Shelter for Native Americans during snowstorms