Answer:
Explanation:
Potential energy increases because the train moves against the magnetic force.
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
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
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:
At time t = 0 s, a puck is sliding on a horizontal table with a velocity 3.60 m/s, 35.0° above the +x axis. As the puck slides, a constant acceleration acts on it that has the following components: a = - 2 0.360 m/s and da, = -0.980 m/s. What is the velocity of the puck at time t = 1.50 s? 2 0
The velocity of the punk at time t = 1.5 s is equal to 2.47 m/s.
What are the components of velocity?The object will have two velocities during the projectile motion, one is horizontal velocity and the other is vertical velocity. The horizontal velocity of the object is constant throughout the projectile motion but the vertical velocity is changed in the projectile motion.
Given that the velocity vector is making an angle θ with a horizontal table, θ = 35°
The vertical component of the velocity of the puck can be determined as:[tex]u_x = u Sin 35^o = 3.60 \times 0.573 =2.06 m/s[/tex]
The horizontal component of the velocity of the puck can be determined as:
[tex]u_y = u cos 35^o = 3.60 \times 0.82=2.95 m/s[/tex]
Given the acceleration aₓ = -0.360 m/s² and a y = -0.980 m/s²
The final vertical components of the velocity of the punk are:
[tex]v_x = u_x + a_xt[/tex]
[tex]v_x = 2.95 - (0.360) (1.5)\\v_x = 2.41 m/s[/tex]
and, the horizontal velocity of the punk is:
[tex]v_y = u_y +a_yt\\v_y = 2.06 - (0.980) (1.5)\\v_y = 0.59 m/s[/tex]
The velocity of the punk can be determined as:
[tex]v = \sqrt{v_x^2 + v_y ^2}\\ v =\sqrt{(5.80)^2 + (0.35)^2}\\ v = 2.47 m/s[/tex]
Learn more about components of the velocity, here:
https://brainly.com/question/12498991
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What is the density of an object with volume 10.0 mL and mass 4.2 g?
Answer: 26.22
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
Which is a device that stores electric charge by separating positive and negative charges?
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
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
What are some ways to deal with stress? HELP
Answer:
dear the other side is the hardich the value that indicates that the other hand if one of triangle ABC news and information or have any further information on the value of x the ki friend my dear the ki aadami you are girl or by phone
Answer:
play games
do meditation
take a long breath
be calm and relax
share your stress
get help from elders
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:
If you cut a apple and leave it in the open air and it turns brown what kind of chemical change is that
Answer:
Oxidation
Explanation:
The browning of the apple after you cut it undergoes a natural chemical change called oxidation, wherein the apple's enzymes react with the oxygen in the environment.
The phrase 10 m per second squared describes the what
Answer:
acceleration that is caused by gravity
Explanation:
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]
the waves that heat a cup of water in the microwwave are an example of electromagnetic waves. True or False
if the police are chasing a runaway car why is knowing the velocity of the car important
If you only know its speed, that's not enough information to catch it. You could even chase it at DOUBLE that speed, and you'd never catch it if you were chasing in the wrong direction.
You also have to know the DIRECTION the runaway car is going, so that you can chase in the same direction.
Now that you know its speed AND direction, you know its velocity. You need that information to have any chance of catching it.
Classify the following situations into contact and non-contact forces.
(a) Applying brakes in a vehicle
(b) a coconut falling from a coconut tree
(c ) the planets revolving around the sun
(d) a ball is rolling on ground.
Answer: Contact force
a. Applying break in a vehicle.
d. The speed of ball rolling on ground is reduced
Non contact force
b. A coconut falling from a coconut tree.
c. The planets revolving around the sun.
Explanation:
The contact force is the force which exerts when one object or entity comes in contact with other object or entity. For example, on application of break the vehicle stops, the force is applied on the breaks to stop the vehicle. The ball rolling on the ground the speed reduces so the application of force on the ground also reduces.
The non contact force is the force one object exerts on the other without coming in direct contact with the other object. The force exerted by one object on other due to gravity is a non contact force. The coconut falling on the ground and planets revolving around the sun are examples of non contact force due to gravity.
2) A bully is pushing a boy against a locker as shown with a force of
500N. The angle between his arms and the ground is 40°. Draw a free-body diagram of
the boy and then find the normal force between the boy and the wall.
HELP
Answer:
pull out the 9
Explanation:
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.
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.
What centripetal force is needed to keep a 7kg mass moving in a circle of 4 meters radius at 15m/s
Answer:
We conclude that the centripetal force needed to keep a 7kg mass moving in a circle of 4 meters radius at 15m/s is 393.75 N.
Explanation:
Given
Mass m = 7 kgRadius r = 4 mVelocity v = 15m/sTo determine
We need to determine the centripetal force needed to keep a 7kg mass moving in a circle of 4 meters radius at 15m/s.
We know a centripetal force acts on a body to keep it moving along a curved path.
We can determine the centripetal force using the formula
[tex]F_c=\frac{mv^2}{r}[/tex]
where
[tex]m[/tex] is the mass[tex]v[/tex] is the velocity[tex]r[/tex] is the radius[tex]F_c[/tex] is the centripetal forcesubstitute m = 7, r = 4, and v = 15 in the formula
[tex]F_c=\frac{mv^2}{r}[/tex]
[tex]F_c=\frac{7\left(15\right)^2}{4}[/tex]
[tex]F_c=\frac{1575}{4}[/tex]
[tex]F_c=393.75[/tex] N
Therefore, we conclude that the centripetal force needed to keep a 7kg mass moving in a circle of 4 meters radius at 15m/s is 393.75 N.
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
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
As wavelength increase, the frequency of the wave increases / decreases.
Answer:
Hey heres your ans
Explanation:
Wavelength will increase
Tq
can somewon help me with this qustion?
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.
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.
Help plz I’ll mark brainliest
Answer:
concave
Explanation:
the middle of the concave lens is narrow and the edges are flattened.