Answer:
-80 m/s/s
Explanation:
acceleration = (v final - v initial) / time
a = (0 m/s - 40m/s) / 0.5 seconds
a = - 40 m/s / 0.5 seconds
a = - 80 m/s/s
What exerts pressure in all directions?
Answer: Gases
Explanation: Gases don't have a certain direction, so they go in all directions.
What is your Momentum traveling 4 m/s with a mass of 70 kg?
Answer:
280
Explanation:
I used the equation for momentum, p=mv
70 x 4 = 280
a sound wave coming from a ringing telephone have a frequency of 226 Hz and it’s wavelength is 2 m. what is the speed of the sound wave.
Answer:
I think this is simple division of the sound wave and the hertz at the same time.
Explanation:
I think you should maybe divide by 2
You and your team of expert engineers are to improve the safety of a section of highway roadway. This is a flat concrete road surface. It is used both by passenger cars (1200 kg) and trucks ( 36,000 kg). The present velocity limit is 15.64 m/s and the radius of turn is 110 m.
The Normal force of each vehicle.
The normal force of the passenger cars is 11,760 N.
The normal force of the trucks is 352,800 N.
What is normal force?
The normal force of an object is the upward force of the object due to its weight acting downwards.
The normal force of the passenger carsThe normal force of the passenger cars is calculated as follows
Fₙ = mg
Fₙ = 1200 x 9.8
Fₙ = 11,760 N
The normal force of the trucksThe normal force of the trucks is calculated as follows;
Fₙ = mg
Fₙ = 36,000 x 9.8
Fₙ = 352,800 N
Learn more about normal forces here: https://brainly.com/question/14486416
A bar magnet is immersed in a heap of iron filings and pulled out. The amount of iron filling clinging to the?
(a) North pole is almost equal to the south pole.
(b) North pole is much more than the south pole.
(c) North pole is much less than the south pole.
(d) Magnet will be same all along its length.
Answer:
(a) North pole is almost equal to the south pole.
Explanation:
Humans selectively breed cows that produce more meat or milk. This selection is not necessarily helpful
to increase their survival rate. They are just selecting a desirable characteristic. How can growing one
variety affect cows population over many generations?
There will be less genetic diversity in the population.
The cows will produce less milk or less meat over generations.
The cows will be able to survive for a longer time.
There will be more genetic diversity in the population.
Answer:
The cows will produce less milk or less meat over generations.
Help a brother out pleaseeeeew
how does lightening occur
Can you please tell me me by looking this book picture
Please fast
Answer:
lightening happens because light is reflectting the inner space of the imagination of dragons
Answer:
When the negative charge in the bottom of cloud are attracted to the positive charge in the ground.Like this lightening occurs.
A toy car has a 1. 5 A current, and its resistance is 2 Ω. How much voltage does the car require? V.
Answer: Voltage = (current) x (resistance)
Voltage = (1.5 A) x (2 ohms)
In order to MAKE 1.5 A of current flow through the toy car, you have to PROVIDE 3 volts from the battery.
A gravitational force of 2.54 x 10^-10 is exerted by two objects that are 0.25 m apart. If the first object has a mass of 0.35 kg, what is the mass of the second object?
Answer :
what is the answer options?
Explanation:
A billiard ball collides with another billiard ball, transferring all of its kinetic energy. What will happen after the collision
Answer: If the cue ball strikes a stationary billiard ball straight on, then the cue ball will stop moving after the collision. It will have transferred all of its kinetic energy to the other ball, which will move forward with the same velocity that the cue ball had before the collision.
Explanation:
If the truck has a mass of 2,500 kilograms , what is its momentum ? (V=45m/s) Express your amswer
Answer:
The answer is 2,500 * 45 = 112500kgm/s
What phase in running is determined when the foot and leg serve as shock absorber, before the foot hits the ground, and the knee flexes ?
Answer:
it is the stance phase of running where the foot and leg serve as shock absorber
At which point is potential energy greatest?
Answer:
when the most energy is stored
An insulated lunch bag keeps food warm by
increasing the thermal energy of the lunch bag.
increasing the thermal energy of the food.
slowing the transfer of thermal energy from the air outside the bag to the food inside the bag.
slowing the transfer of thermal energy from the food inside the bag to the air outside the bag.
Answer:
slowing the transfer of thermal energy from the food inside the bag to the air outside the bag.
Explanation:
Answer:
D
Explanation:
slowing the transfer of thermal energy from the food inside the bag to the air outside the bag.
How far is one light-year in kilometres? Answer to 2sf.
Answer:
9.461 trillion kilometers
Which phenomenon do solar panels rely on to produce electricity from sunlight?
Answer:
When the sun shines onto a solar panel, energy from the sunlight is absorbed by the PV cells in the panel. This energy creates electrical charges that move in response to an internal electrical field in the cell, causing electricity to flow.
Answer:
When the sun shines onto a solar panel, energy from the sunlight is absorbed by the PV cells in the panel. This energy creates electrical charges that move in response to an internal electrical field in the cell, causing electricity to flow.
Explanation:
What type of main sequence star is most likely to become a black hole?.
What is the momentum of a golf ball with a mass of 62 g moving at 73 m/s?
Explanation:
Momentum = mass × Velocity
p = 62×73
p =4526
if you are riding on a train that speed past another train moving in a same direction on an adjacent track ti appears that the other train is moving backward why?
Answer:
If you are traveling with a relativity constant velocity, then you will interpret your reference frame as being at rest. Since you are moving faster than the other train, the other train is moving backwards relative to you. Seeing the other train go past your window from front to rear makes it look like the train is going backwards
Explanation:
brainlist nd 20 points
Answer:
I'm not sure but I think it's 35-39
Do loud sounds travel faster than soft sounds?
Answer: No. Both travel at the same speed.
Explanation:
Answer: no, they all travel at the same speed
Explanation: the amplitude of a sound does not matter for all sound travels at the same speed
2. Two spherical objects have masses of 1.5 x 109 kg and 8.5 x 10 kg. Their centers are
separated by a distance of 2500 m. Find the gravitational attraction between them.
music=life=love=GOD
GOD is MUSIC
Explanation:I hope this helps. Not with your mathematical issue. Maybe watch Good Will Hunting?
LOL
God Bless brother. I hope you get it. It takes hard work.
b.
If thermal energy is added to a liquid, what is the most likely thing that will happen to the substance?
Explanation:
When thermal energy is added to a substance, its temperature increases, which can change its state from solid to liquid (melting), liquid to gas (vaporization), or solid to gas (sublimation).
Box is kicked (given an initial speed), causing it to slide along a level floor. There is friction acting between the box and floor surfaces. What is true about this motion
Answer:
I would assume that the box slows down due to the frictional force between the floor and the box. In addition, the frictional force points opposite of the boxes motion. As we know, the box was given an initial speed, therefore, having an applied force. Hence, we can conclude that the frictional force opposing the motion of the crate is equal to the applied force but acting in the opposite direction. This frictional force is called static friction. When we increase the applied force (push harder), the frictional force will also increase until it reaches a maximum value.
Hope that helps!
What is the difference between kinematics and dynamics?.
A car that weighs 40,000 N is driving down a hill at a constant velocity. If the car’s momentum is 80,000 kg∙m/s, how fast is the car moving?
The velocity of the car is equal to 20 m/s.
Given the following data:
Weight of car = 40,000 Newton.Car’s momentum = 80,000 kg∙m/s.Scientific data:
Acceleration due to gravity = 10 [tex]m/s^2[/tex].To determine the velocity of the car:
How to determine the car's velocity.First of all, we would calculate the mass of the car by using this formula:
[tex]Weight = mg\\\\40000=m \times 10\\\\m=\frac{40000}{10}[/tex]
Mass, m = 4,000 kg.
For the velocity:
Mathematically, momentum is giving by this formula;
[tex]Momentum = mass \times velocity[/tex]
Making velocity the subject of formula, we have:
[tex]Velocity = \frac{Momentum}{Mass}[/tex]
Substituting the given parameters into the formula, we have;
[tex]Velocity = \frac{80000}{4000}[/tex]
Velocity = 20 m/s.
Read more on momentum here: brainly.com/question/15517471
On average, how many lunar eclipses are there every year?.
Answer:
Three lunar eclipses every year.
Explanation:
A lunar eclipse only occurs during a full Moon, when the Sun, Earth and Moon are all aligned. But despite the Moon only taking 29.5 days to orbit Earth and complete a cycle from full Moon to full Moon, there are only on average about three lunar eclipses every year.
name an object that contains all 7 energies, and where those energies are shown.
Answer:
I don't know what energy is there I think you need to check in you book or note dear
Explanation:
hope you will understand
[tex]kai6417[/tex]
How far will an object go if it is moving at a speed of 55 km/hr, and moves for 6.3 hours?
Answer:
346.5 km
Explanation:
to find distance- multiply speed by time
so 55×6.3= 346.5 km
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