Answer: 250
Explanation:
Object A has a mass of 8.0 kg and is accelerating at 4.0 m/s2. Object B has a mass of 10.0 kg and is accelerating at 3.0 m/s2. Object C has a mass of 7.0 kg and is accelerating at 5.0 m/s2. Place the objects in increasing order according to the net force they are experiencing.
a. A, B, C
b. B, A, C
c. C, B, A
d. C, A, B
Answer:
b. B, A, C
Explanation:
To solve this problem, let us find the net forces they are experiencing.
Net force = mass x acceleration
Object A; mass = 8kg and acceleration = 4m/s²
Net force = 8 x 4 = 32N
Object B; mass = 10kg and acceleration = 3m/s²
Net force = 10 x 3 = 30N
Object C: mass = 7kg and acceleration = 5m/s²
Net force = 7 x 5 = 35N
So, increasing order of their net force;
B < A < C
What is the momentum of a 1.5 * 10 ^ 3 - kil kilogram car as it travels at 30. meters per second due east for 60. seconds ?
Answer:
45000kgm/s due east
Explanation:
Given parameters:
Mass of the car = 1.5 x 10³kg
Velocity = 30m/s
Time taken = 60s
Unknown:
Momentum = ?
Solution:
Momentum is the quantity of motion a body possess,
Momentum = mass x velocity
So;
Momentum = 1.5 x 10³ x 30 = 45000kgm/s due east
What conditions are needed for germination?
Air, water, and warmth
Cold air, water, and soil
Water, warmth, and a good location
Warmth, water, and wind
Answer:
I think it would be A
Explanation:
Air, water, and warmth
Excuse my mistake if I get it wrong.
Answer:
I think it would be A
Explanation:
Air, water, and warmth
hopes this helps
A book is sitting on a desk. If the surface area of the book's cover is 0.05 m², and atmospheric pressure is 100.0 kPa, what is the downward force of the atmosphere on the book
Answer:
5000N
Explanation:
Given parameters:
Area of the book cover = 0.05m²
Atmospheric pressure = 100kPa = 100 x 10³Pa
Unknown:
Downward force of the atmosphere on the book = ?
Solution:
Pressure is defined as the force per unit area on a body.
So;
Downward force = Atmospheric pressure x Area
Downward force = 100 x 10³ x 0.05 = 5000N
How is a coil of current carrying wire similar to a bar magnet
Answer:
When an electric current flows, the shape of the magnetic field is very similar to the field of a bar magnet
Explanation:
can somewon help me with this qustion?
A satellite in a geostationary orbit circle the earth above equator with a period of exactly 1 day, so it stay above a particular place all the time. Most of the satellite in such orbit act as relays for telephone calls and television programs. find the altitude of a geostationary orbit
Answer:
Explanation:
When the Skydiver jump out a plane, his Potential Energy is being converted or transform into Kinetic energy due to gravity. Hope this helps
The diagrams below show a model airplane.
propeller
propeller
rubber
number
hand
before winding
rubber band
after winding
rubber band
Which energy transformation occurs in a rubber band powered model airplane when it is flown?
Thermal energy stored in the rubber band is transformed into chemical energy used by the propeller.
Kinetic energy stored in the rubber band is transformed into thermal energy used by the propeller.
Chemical energy stored in the rubber band is transformed into potential energy used by the propeller.
ОО
Potential energy stored in the rubber band is transformed into mechanical energy used by the propeller.
Answer:d
Explanation:lmk if I'm wrong
You walk across a carpet and you end up negatively charged. Explain how this happens
Answer:
it transfers to other objects so as time goes on it becomes negative
Explanation:
In other words, the carpet took the charge from your socks
Which of the following is a chemical change?
Answer:
B:melting of a cube of ice
Explanation:
because it comes out as ice then it melts into liquids
Answer:
the answer is D , because the circumference equals the mass of e=mc squared and if u divide that by itself you'll get a negative answer so u flip the reciprocal and then subtract oxygen and then u get splitting water into hydrogen and oxygen
A 5Kg ball rolling to the right at a velocity of 5m/s hits a stationary 10Kg ball. It is an elastic collision and the final velocity of the 5Kg ball is 0m/s. What is the final velocity of the 10Kg ball?
Answer:
magnitude of v = 2.5 m/s, and in the same direction as the initial velocity of the 5 kg ball.
Explanation:
We use conservation of linear momentum in an elastic collision to solve for the unknown velocity v:
Pi = Pf
5 kg * 5 m/s + 10 kg * 0 m/s = 5 kg * 0 m/s + 10 kg * v
25 kg m/s = 10 kg * v
v = 25/10 m/s
v = 2.5 m/s
and in the same direction as the initial velocity of the 5 kg ball.
An apple falls off a roof .It takes the apple 15.7 seconds to hit the floor . How far did the apple fall?
Answer:
8.83m below I hope I got it
How is an object’s position in the solar system affect its motion and temperature?
Answer:
it will be base on the climate change.
Explanation: so let just say tomorrow it will be cold so the atmosphere will circle on the coolest atmosphere away from the sun.
An object's position in the solar system affects both its motion and temperature. Objects closer to the Sun experience a stronger gravitational force, causing faster or slower orbits. Other planets and moons also influence an object's orbit and speed. Objects closer to the Sun receive more solar radiation and are hotter, while those farther away receive less radiation and are colder. Additionally, the composition of an object's surface can affect its temperature.
What is the solar system?The solar system refers to the group of celestial bodies that orbit around the Sun, including planets, dwarf planets, moons, asteroids, comets, and other small bodies. It is located in the Milky Way galaxy and spans a distance of about 4.6 billion years in age. The eight planets in the solar system, in order from the Sun, are Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune. The solar system is held together by the gravitational force of the Sun and is a subject of scientific study to understand the formation and evolution of our own planet and the other bodies in the solar system.
Here in the Question,
An object's position in the solar system can affect both its motion and temperature. Here's how:
Motion: The motion of an object in the solar system is affected by its distance from the Sun and the gravitational forces of other celestial bodies. An object closer to the Sun will experience a stronger gravitational force than an object farther away. This can cause the object's orbit to be faster or slower depending on its position. Additionally, the gravitational pull of other planets and moons can affect the object's orbit and speed.
Temperature: An object's temperature in the solar system is affected by its distance from the Sun and the composition of its surface. Objects closer to the Sun receive more solar radiation and thus have a higher temperature. Objects farther away receive less radiation and are colder. Additionally, the composition of the object's surface can affect its temperature. For example, objects with high albedo (reflectivity) will reflect more solar radiation and have a lower temperature than objects with low albedo.
Therefore, an object's position in the solar system has a significant impact on its motion and temperature. By studying the positions of celestial bodies and their effects on each other, scientists can gain a better understanding of the dynamics of the solar system and the properties of objects within it.
To learn about Kepler's third law click:
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Tell me what the
forces are.
PLZ LOOK AT THE PHOTO AND TELL ME THE ACTION AND REACTION FORCES ASAP
WILL MARK BRAINLIEST
Answer:
upward thrust, makes the rocket go up
and kentic energy, you swing and the energy that was built up before you hit the ball was transferred
Explanation:
1-D catch-up: Two cars move with constant velocities. At t = 0, a blue car is at xBo = 20 m. After t = 4s in the blue car time frame of reference, a red car located then at xRo = 0m, within 3 seconds catches up with the blue car at xB = XR = 60 m.
Find the velocities of blue and red cars.
Answer:
5.71 m/s ;
20 m/s
Explanation:
Blue car:
At time, t = 0 ; Initial position = 20 m
Final position, = 60m after 4 seconds
The velocity = change in distance / change in time.
Velocity of blue = (60 - 20)m ÷ ((4 + 3) - 0),
Velocity of blue car = 40 / 7
= 5.71 m/s
Red car:
Initial Position = 0 ; final Position = 60
Time taken = 3 seconds
Velocity of Red car = (60 - 0)m ÷ 3
Velocity of Red car = 60 / 3
= 20 m/s
What is the force of an object that has a mass of 42 kg and an acceleration of 3 m/s22?
Answer:
[tex]\boxed {\boxed {\sf 126 \ Newtons}}[/tex]
Explanation:
According to Newton's 2nd Law of Motion, force is the product of mass and acceleration.
[tex]F=ma[/tex]
The mass is 42 kilograms and the acceleration is 3 meters per square second.
[tex]m= 42 \ kg \\a= 3 \ m/s^2[/tex]
Substitute the values into the formula.
[tex]F= 42 \ kg * 3 \ m.s^2[/tex]
Multiply.
[tex]F= 126 \ kg*m/s^2[/tex]
1 kilogram meter per square second is equal to 1 Newton. The answer we calculated is equal to 126 Newtons.[tex]F= 126 \ N[/tex]
The object's force is 126 Newtons.
If an object is not moving, does that mean there are no forces acting up on it? Why or why not?
Answer:
If an object is at rest, then there are no forces acting upon the object.
Explanation:
It would take an unbalanced force to keep an object in motion at a constant velocity. It is the natural tendency of all objects to eventually come to a rest position.
Which is a device that stores electric charge by separating positive and negative charges?
According to this balanced equation, how many grams of water (H20) form in
this reaction?
Please help!
Answer:
18.02
Explanation:
Answer:
C) 18.02
Explanation:
A.P.E.X
A car and a lorry are about to collide. When they collide the two vehicles become tightly locked together. The lorry is going at a speed of 20km/h and weighs 9.5 tonnes. The car is going at a speed of 40km/h and is 0.5 tonnes. Calculate the speed of the vehicles immediately after the collision. (6 marks)
Answer:
The speed of the vehicles immediately after the collision is 5.84 m/s.
Explanation:
The speed of the vehicles after the collision can be found by conservation of linear momentum:
[tex] p_{i} = p_{f} [/tex]
[tex] m_{1}v_{1_{i}} + m_{2}v_{2_{i}} = m_{1}v_{1_{f}} + m_{2}v_{2_{f}} [/tex]
Where:
m₁: is the mass of the car = 0.5 ton = 500 kg
m₂: is the mass of the lorry = 9.5 ton = 9500 kg
[tex]v_{1_{i}}[/tex]: is the initial speed of the car = 40 km/h = 11.11 m/s
[tex]v_{2_{i}}[/tex]: is the initial speed of the lorry = 20 km/h = 5.56 m/s
[tex]v_{1_{f}}[/tex]: is the final speed of the car =?
[tex]v_{2_{f}}[/tex]: is the final speed of the lorry =?
Since the two vehicles become tightly locked together after the collision [tex]v_{1_{f}}[/tex] = [tex]v_{2_{f}}[/tex]:
[tex] m_{1}v_{1_{i}} + m_{2}v_{2_{i}} = v(m_{1} + m_{2}) [/tex]
[tex] v = \frac{m_{1}v_{1_{i}} + m_{2}v_{2_{i}}}{m_{1} + m_{2}} = \frac{500 kg*11.11 m/s + 9500 kg*5.56 m/s}{500 kg + 9500 kg} = 5.84 m/s [/tex]
Therefore, the speed of the vehicles immediately after the collision is 5.84 m/s.
I hope it helps you!
In the diagram, the Sun, Earth, and Moon are in perfect alignment. Which two conclusions can be drawn based on the diagram?
a diagram showing Earth between the Sun and Moon and casting a shadow on the Moon; Remove the text "Figure 1" and use upper and lower text: Sun, Earth, Moon, Earth's shadow. (MORE THAN 1 ANSWER)
An observer on the Moon sees a solar eclipse.
An observer on the Moon sees a lunar eclipse.
An observer on the Moon sees a partial eclipse.
An observer on Earth sees a lunar eclipse.
An observer on Earth sees a solar eclipse.
Answer:
I know one answer is an observer on earth sees a lunar eclipse
Answer:An observer on the Moon sees a solar eclipse. and An observer on Earth sees a lunar eclipse.
Explanation:from the moon the sun is completly if not just mostly invisible(solar eclipse) and from earth the moon would be in lunar eclipse from the earth blocking the sun.
For maximum safety, an electrician should learn
Answer: how to read blueprint, how to use power tools, how to plan and complete an electrical installation for a dwelling, how to interpret the rules regulation of the Ontario Building code
Explanation:
A horse pulls a wagon that weighs 10 times more than the horse. The horse pulls with a force of 500N to move the wagon forward. How much force does the wagon exert on the horse? *
a. More than 500N
b. It depends on the size of the horse
c. Less than 500N
d. 0N because a wagon cannot exert a force
e. 0N because the wagon is moving
f. 500N
Answer:
f. 500N
Explanation:
The force exerted by the wagon on the horse is 500N directed in the opposite path .
This is premised on the Newton's third law of motion which states that "action and reaction forces are equal and opposite in direction".
So, as the action force of 500N is used by the horse to drag the wagon, the wagon also exerts an oppositely directed force of 500N on the horse.
This way, the acceleration can continue.
Is soil a product of photosynthesis?
Answer:
yes
Explanation:
The plants use water (H2O) from the soil and carbon dioxide (CO2) from the air and recombine them to form carbohydrates (CH2O) and oxygen (O2).
As wavelength increase, the frequency of the wave increases / decreases.
Answer:
Hey heres your ans
Explanation:
Wavelength will increase
Tq
the waves that heat a cup of water in the microwwave are an example of electromagnetic waves. True or False
A ball has a mass of 2 kg and is thrown with a force of 8 Newtons for .35 seconds. What is the ball's change in
velocity?
Answer:
1.4s
Explanation:
Given parameters:
Mass of ball = 2kg
Force = 8N
Time = 0.35s
Unknown:
Change in velocity = ?
Solution:
To solve this problem, we use the expression obtained from Newton's second law of motion which is shown below:
Ft = m(v - u)
So;
Ft = m Δv
F is the force
t is the time
m is the mass
Δv is the change in velocity
8 x 0.35 = 2 x Δv
Δv = 1.4s
A 2000 Kg car is driving 15 m/s. It drives head-on into a giant spring attached
to a brick wall. The spring compresses 8 meters after the impact. What is the
spring coefficient of the giant spring? *
Answer:
The spring constant is k=7031.25
Explanation:
We start by using the conservation of mechanical energy:
Ui + Ki = Uf + Kf
the Ui (initial potential energy) is zero since the spring is relaxed.
In the final situation, the Kf (final kinetic energy is zero since the car and spring are NOT in motion)
Then we have:
[tex]K_i=U_f\\\frac{1}{2} m*v^2=\frac{1}{2} k*(\Delta x)^2\\\frac{1}{2} 2000*15^2=\frac{1}{2} k*(8)^2\\k=7031.25[/tex]
What is the period of a wave that has a frequency of 3 Hz?
A. 30 s
B. 0.3 s
C. 300 S
D. 3 S
Answer:
B.) 0.3s
Explanation:
The period of a wave that has a frequency of 3 Hz is 0.3s. Hence option B is correct.
What is wave ?Wave is is a disturbance in a medium that carries energy as well as momentum . wave is characterized by amplitude, wavelength and phase. Amplitude is the greatest distance that the particles are vibrating. especially a sound or radio wave, moves up and down. Amplitude is a measure of loudness of a sound wave. More amplitude means more loud is the sound wave.
Wavelength is the distance between two points on the wave which are in same phase. Phase is the position of a wave at a point at time t on a waveform.
There are two types of the wave longitudinal wave and transverse wave.
Longitudinal wave : in which, vibration of the medium (particle) is parallel to propagation of the wave. Sound wave is a longitudinal wave. Transverse wave : in which, vibration of the medium (particle) is perpendicular to propagation of the wave. Light wave is a transverse wave.
Time period of the wave is inverse to the frequency of the wave.
T = 1/f
T = 1/3
T = 0.333 s
Hence option B is correct.
To know more about frequency ;
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Kinetic Friction force is always less than Static Friction force.
True
False
Answer and I will give you brainiliest
heeeeelp please
Answer:
true
Explanation:
because u will use more force to start an object rather than to push moving object