Momentum:
3
Mass A has a mass of 10 kg while mass B has a mass of 20
kg. Which of these must be true?
Answers
Answer:
D
Explanation:
F=ma
a=F/m
according to option D, F is constant
so acceleration is inversely proportional to mass and A has half the mass of B. Hence, acceleration of A will be twice of B if same force is applied.
Related Questions
PLEASE HELP MEE I REALLY NEED IT
Answers
Answer:
measures of central tendency are numbers that describe what an average or typical within a distribution of data there are three main measures of central tendency mean medium and mold well they are all measuring essential tendency each is calculated differently and measures something different from others
help! 20 points
A scientist has two radioactive substances. One emits beta particles, and the other emits alpha particles. He thinks that since the alpha particles are larger, they are more dangerous to humans. Is he correct? Why or why not?
No, because beta particles move faster and can penetrate into the human body more easily.
No, because neither type of particle is dangerous to humans.
Yes, because alpha particles move more slowly, and therefore leave more lasting damage to humans.
Yes, because the larger particles carry more energy and can cause more damage to cells.
Answers
Answer:
No, because beta particles move faster and can penetrate into the human body more easily.
Explanation:
Some beta particles are capable of penetrating the skin and causing damage such as skin burns. However, as with alpha-emitters, beta-emitters are most hazardous when they are inhaled or swallowed.
Answer:
answer is A
Explanation:
What is the force acting on a 16 kg object accelerating at 2.0 m/s^2
Answers
Answer:
32 N
Explanation: All you gotta do is multipy mass by velocity.
Why is “soft” iron used for the core of an electromagnet?
It is difficult to magnetize.
It has no magnetic domains.
It is a permanent magnet.
It is easily magnetized.
Answers
Answer:
It is difficult to magnetize.
How many seconds will it
take to travel 1,800
meters if your speed is
90 meters per second?
Answers
Answer:
200 seconds
Explanation:
1,800 divided by 90 = 200
Suppose a rollerblade racer finnished a 132 meter race in 18 seconds. What is the average speed of the rollerblade racer
Answers
Answer:
As = 7.33 [m/s]
Explanation:
To solve this problem we must use the definition of the average speed, which is equal to the relationship between the distance over time.
As = x/t
where:
As = average speed [m/s]
x = distance = 132 [m]
t = time = 18 [s]
As = 132/18
As = 7.33 [m/s]
What happened when the solid sulfur was melted?
Answers
Answer:
Sulfur is a COMBUSTIBLE SOLID. ... Molten Sulfur reacts with HYDROCARBONS to form toxic and flammable gases such as Carbon Disulfide and Hydrogen Sulfide).
Explanation:
Why does air move from solid land towards water during the night?
A-Solid ground cools faster at night while water remains heat longer, warming the air above the water.
B- The ground retains the heat from the sun longer than the water.
C- The dry air over the land is heavier than the air over the water the contains more water vapor
D- gravity moves the air towards the water because water is lower than the land
Answers
Answer:
A
Explanation:
This is to do with convection currents :)
Hope this helps!
PLEASE HELP ME FAST MANY POINTS BRAINLIEST TO BEST
What is pitch related to in terms of sound? Does it affect its speed? If so, how?
Answers
Answer:
pitch relates to sound because it involves sound getting louder or softer. it does not affect speed.
Light is ______________ that behaves like a wave and a particle
Answers
Answer:
Energy
Explanation:
Who ever answers Frist get marked the Brainly Est
the table below shows the right ascensions of two stars at a location.
Name of star Right ascension
Star 1 2 hours
Star 2 4 hours 30 minutes
What is the interval between the times when the two stars rise at the location? (10 points)
Group of answer choices
2 hours
30 minutes
2 hours 30 minutes
4 hours 30 minutes
Answers
Answer:
Explanation:
It would actually be A. 30 , as each hour of ascension (i am not sure about the correct terminology) equals 15 .
Answer:
30
Explanation:
In Part I of this experiment, the______was intentionally manipulated. This was the independent variable. The dependent variable measured was the _______.
In Part II of this experiment, the______was intentionally manipulated. This was the independent variable. The dependent variable measured was the_______.
Answers
Answer:
1. car hitting a barrier 2. velosity of the washer 3. force applied to the car 4. acceleration of the car.
Explanation: edge 2020
why because nice
Answer:
1: car hitting a barrier
2: velocity of the washer
3: force applied to the car
4: acceleration of the car
Explanation:
A free-body diagram is a special example of the vector diagrams that will
be used throughout our study of physics.
True
or
False
Answers
A student sits on the roof of their house which is 16 meters high. She can launch water balloons (horizontally) from a slingshot at 26 m/s. How far will each balloon travel (horizontally)?
A. 67.06 m
B. 17.06 m
C. 0.06 m
D. 47.06 m
Answers
Answer:
The horizontal distance traveled by the water balloons is 47.06 m.
D. 47.06 m
Explanation:
Given;
height of the house, h = 16 m
horizontal velocity of the water balloons, v = 26 m/s
The time taken for the water balloons to hit the ground is given by;
[tex]t = \sqrt{\frac{2h}{g} } \\\\t = \sqrt{\frac{2*16}{9.8} }\\\\t = 1.81 \ s[/tex]
The horizontal distance traveled by the water balloons is given by;
x = vt
x = 26 x 1.81
x = 47.06 m
Therefore, the horizontal distance traveled by the water balloons is 47.06 m.
HELPPPP LOOK AT THE SCREENSHOT TO ANSWER THE QUESTIONS
17. Which object or objects are traveling at a constant velocity?
1. A
2. B
3. C
4. D
5. E
18. Which object is accelerating?
1. A
2. B
3. C
4. D
19. Which object or objects are sitting still?
1. A
2. B
3. C
4. D
5. E
20. On average, which object is traveling at the fastest velocity?
1. A
2. B
3. C
4. D
5. E
Answers
Explanation:
17. B and D.
18. C.
19. A and E.
20. B
hope it helps. :)
Question 1 of 16
A bowling ball with a mass of 8 kg is moving at a speed of 5 m/s. What is its
kinetic energy?
Answers
Answer:
mass energy
Explanation:
because of the kinetic energy
force can change the ____________ and _______________ of an object
Answers
Answer:
Force can change the speed and direction of an object.
Explanation:
When you walk on a floor, what pushes you
along?
Answers
Answer:
In order to walk across the floor, you push backwards on the floor with your foot. Newton's Third Law says that the reaction force to this action force is "floor pushes you forward" (Action: You push floor (backwards). Reaction: floor pushes you (forward).) So, when you walk, it is the floor that pushes you along!
Explanation:
.
Answer friction
How are electric motors and generators similar? 
Answers
Answer:
they both produce energy
Explanation:
WILL MARK BRAINLIEST The diagram shows changes of state between solid, liquid, and gas. The atoms of a substance gain energy during a change of state. Before the change the atoms are close together and cannot slide past one another. After the change, the substance can fill its container.
Which arrow represents the change of state described above?
1.L
2.M
3.N
4.O
Answers
Answer:
its a top question
I think L represents ✌️
1) L
Explanation:
During the solid form are atoms close to eachother and can't move around too much. A gas can fill up a container while a liquid just takes the form of a container.
What happens to the angle of reflection with respect to the angles of incidence?
Please help ASAP
Will give you 15 points !!!
Answers
Answer:
The law of reflection states that the angle of reflection equals the angle of incidence—θr = θi. The angles are measured relative to the perpendicular to the surface at the point where the ray strikes the surface.
Explanation:
Do you need a reason to live? If you do what is your reason for living?
Answers
Answer: Well that's an easy one. Your mother birthed you but you are still alive today because you choose to continue to push forward and strive to live. As humans we all have struggles but some of choose to strive or sit in our humiliation like a kicked puppy. Pick your option.
How fast is a plane flying if it takes 3 hours to travel 3,500 km?
Answers
Answer:
1166.67 km/h
Explanation:
3500/3
= 1166.67 km/h
Hope this helped!
Answer:
HELPP
Explanation:
What are the strengths and limitations of the doppler and transit methods? What kind of planets are easiest to detect with each method?
help me please :( i will but brainliest
Answers
[tex]\huge\mathfrak\red{✔Answer:-}[/tex]
Strength: able to detect planets in a wide range of orbits, as long as orbits aren't face on
Limitations: yield only planet's mass and orbital properties
yall think aliens real? for me no, because people been trying to search for them through telescopes and stuff for years. but still no sign of them, so they are not real, since there is no evidence, it leads us to the answer, no. we are alone in the universe. but that's only in my opinion...(I might be wrong.)
how about everyone else? how do yall feel about aliens, and us being alone?
Answers
Answer:
Personally I don't believe aliens exist maybe they do who knows but i don't think so.
Explanation:
if a tree falls in the woods and nobody is there to hear it, does it really make noise
Answers
Answer: Yes
Explanation: Because, Yes.
Can somebody please explain to me about the rock cycle anything would help i have an assignment coming up please and thank you
Answers
a. What is the coefficient of kinetic friction?
Answers
Explanation:
Coefficient of kinetic friction is the resistive force that opposes the motion of a body as it moves and is in contact with another body.
It is found by dividing the frictional force by the normal force.
Friction is a force that opposes motion. Static friction is for bodies that are not in motion Kinetic friction is for moving bodies.How did the gas & dust between the starts & in all corners of the universe get there
Answers
The result of leftover remnants of previous stars
I WILL GIVE BRAINLIEST (This question will give you 15+ points)
3. Explain and give an example of "lookback time".
Answers
Answer:
Lookback time explains that the farther away something is, farther in the past we see it. The Sun's light takes about 8 minutes to reach our eyes. So in reality, we see the Sun as it was 8 minutes ago.
Explanation:
