Answer:
Light, heat, radio, and similar types of energy
can you give me brainliest
Explanation:
Light, heat, radio, and similar types of energy are carried by a variety of waves in the ELECTROMAGNETIC SPECTRUM. Some energy waves need a medium, such as water or air, through which to travel.
. A small toy car having 300 grams of mass and going straight with an initial velocity of 13 m/s. When the toy car collides with an obstacle, a resistive force of 4 N acts upon it. The speed of the toy car reduced and reached 8 m/s. Draw its free body diagram and then find the time for the toy car to be into rest position?
The free-body diagram is attached in the image below. The time for the toy car to be in rest position is 0.6 s
From the given information:
The mass of the toy car = 300 g = 0.3 kgThe initial velocity (u) of the car = 13 m/sThe resistive force F_r acting on the car = 4 NThe speed of the car (v) = 8 m/sA force is regarded as a push that causes an alteration in motion of an object within a specified distance. It is usually expressed by the formula:
Force = mass × acceleration∴
acceleration = Force/massacceleration = (4 / 0.3) m/s²acceleration = 13.33 m/s²Using the first equation of motion for the time to bring the car to rest from it reduced speed of 8 m/s;
v' = v + atsince the final speed to bring the car in rest position is (0), then:
0 = 8 - 13.33(t)
13.33(t) = 8
t = 8/13.33
t = 0.6 seconds
Learn more about the equation of motion here:
https://brainly.com/question/19959461?referrer=searchResults
2. Why do you think a light stick would be a good light source around flammable material?
Answer:
because it doesnt contain fire
the amount of force applied per given area is
Answer:
Explanation: The amount of force applied per given area is pressure...(F/A)
SI unit=Pascals(Newtons/m^2)
The force of gravity between two students is 3.5E-8 Newtons. If
the first students mass is 71.0 kg and the second students mass is
67.0 kg, how far apart must the students be from each other?
Answer:
r = 9521.29
Explanation:
Given:
Gravitational Force = [tex]3.5E-8[/tex] (Fg)
Student Mass 1 = 71 kg (M)
Student Mass 2 = 67kg (m)
Gravitational constant = [tex]6.67E-4[/tex] (G)
[tex]Fg=\frac{GMm}{r^{2} }[/tex]
[tex]r^{2} =\frac{GMm}{Fg}[/tex]
[tex]r^{2} =\frac{(6.67E-4)*(71)*(67)}{3.5E-8}[/tex]
[tex]r= \sqrt{90654828.57}[/tex]
[tex]r=9521.282927[/tex]
r = 9521.29
if a firework on the fourth of july is fired upwards from the ground with an initial speed of 200 m/s...
a. What is the total time the rocket spends ascending towards the sky?
b. How high up from the ground does the rocket travel?
(a) The time spent by the rocket ascending towards the sky is 20.4 s.
(b) The height traveled by the rocket from the ground is 2,040.8 m.
The given parameters:
initial speed of the firework, [tex]v_o[/tex] = 200 m/sThe time spent by the rocket ascending towards the sky is calculated as follows;
[tex]v_f = v_0 -gt[/tex]
where;
[tex]v_f[/tex] is the final velocity of the rocket at the maximum height
[tex]0 = v_0 -gt\\\\gt = v_0\\\\t = \frac{v_0}{g} \\\\t = \frac{200}{9.8} \\\\t = 20.4 \ s[/tex]
The height traveled by the rocket from the ground is calculated as follows;
[tex]h = v_0t - \frac{1}{2} gt^2\\\\h = 200(20.4) \ - \ \frac{1}{2} (9.8)(20.4)^2\\\\h = 2,040.8 \ m[/tex]
Learn more here:https://brainly.com/question/13468390
A skydiver jumps from an airplane that is moving at 50 meters per second at a height of 1,000 meters what describes the skydivers energy immediately after leaving the air plane
Answer:
11060M Joules, where M is the mass of the diver in kg
Explanation:
Mass of the skydiver missing, we're assuming it's M.
It's total energy is the sum of the contribution of his kinetic energy (K)- since he's moving at 50 m/s, and it's potential energy (U), since he's subject to earth gravity.
Energy is the sum of the two, so [tex]E = K+U= \frac 12 M v^2 + Mgh = M (\frac 12 \cdot 50^2 + 9.81\cdot 1000) = M ( 1250 + 9810) = 11060\cdot M[/tex]
an amusement park ride has two identical carriages that revolve around the center of the ride’s axle, as shown in the figure. both carts travel at a constant tangential speed at all points along the circular path. at what position is the total mechanical energy of the cart-cart-earth system at its maximum value?
The principle of conservation of energy allows to find the result for the mechanical energy of the system is:
Mechanical energy is conserved at all points, therefore at all points it has the same value.
Mechanical energy is defined by the sum of the kinetic energy and the potential energies.
Em = K + U
In the principle of energy conservation, it establishes that energy cannot be created or destroyed, it is only transformed, in the case of no friction, mechanized energy is conserved at all points.
They indicate that the system is rotating, which is why it is subjected to a force that expends its energy in changing the direction of the speed to keep the system in rotation, so the speed of the system remains constant.
Em = K = ½ I w²
Consequently, using the principle of conservation of energy we can find the result for the mechanical energy of the system is:
Mechanical energy is conserved at all points, therefore at all points it has the same value.
Learn more here: brainly.com/question/1517221
Please if you can give an explanation and not just the answer.
Answer:
what you perfect Wuman in the world just try and try I wish you get it just trust me I'm a Wuman and man
An object has a acceleration of 10m/s^2 if the net force acting on this object were halved, what would the new acceleration of the object be
Answer:
As we increase the force on an object the acceleration increases proportionally. Since the mass does not change as the acceleration increases, we can say that force is equal to acceleration. Therefore, if you double the force you double the acceleration. ... Therefore, mass is inversely proportional to accelerationExplanation:I hope I helped you #learn from khabyIf an object has an acceleration of 10m/s^2 if the net force acting on this object were halved, then the acceleration of the object would become half as well because the force and the acceleration are directly proportional.
What is acceleration?
The rate of change of the velocity with respect to time is known as the acceleration of the object.
As given in the problem an object has an acceleration of 10 m/s^2 if the net force acting on this object were halved, then the new acceleration of the object be 5 meters / second².
Force = mass × acceleration
As the force is directly proportional to the acceleration of the object keeping the mass of the object constant.
Thus, the acceleration of the object would become 5 meters / second².
To learn more about acceleration from here, refer to the link;
brainly.com/question/2303856
#SPJ5
Pythagoras theorem is used to find the resultant force when angle between 2 forces is _________ degrees. asap
0
45
90
180
[tex]▪▪▪▪▪▪▪▪▪▪▪▪▪ {\huge\mathfrak{Answer}}▪▪▪▪▪▪▪▪▪▪▪▪▪▪[/tex]
Pythagoras theorem is used to find the resultant force when angle between 2 forces is 90 degrees ~
Two objects feel 200 N of force due to gravity between them. If the mass of one object was doubled, what would be the new force of gravity?
Answer:
你想知道你认为什么不是开放互联网不是开放互联网不是开放互联网不是开放互联网不是开放互联网
NEED HELP!!! ANSWER THESE 5 QUESTIONS FOR 25 POINTS!!!! PLEASE ANSWER!! I WILL GIVE YOU BRAINEST
1. Jerome explains to his doctor that because he spends a lot of time at his desk, he makes sure that his chair supports good posture. But when he is home, he spends his time on an old, squishy couch that offers very little support. He figures that since he spends most of his time at work, he does not need to worry about his home furniture as much. How would Jerome’s doctor MOST likely reply?
A.
Jerome’s thinking is correct since he spends most of his time at work.
B.
Jerome should bring his chair from work home with him on the weekend.
C.
If Jerome’s standing posture is good, he does not have to worry about his seated posture.
D.
Sitting properly is important in all contexts, so Jerome should consider his seating at home.
2. Guillermo has decided that he wants to be healthier, so he starts jogging. He has been at it for a week, but he is getting frustrated because he cannot run very far without getting out of breath. He is beginning to think that this is not a good exercise for him since he is not very good at it. What BEST explains why Guillermo is struggling?
A.
He probably does not have good form when he is exercising.
B.
He likely has heart or lung problems that he was not aware of.
C.
He does not have much endurance since he is new to exercise.
D.
He is just not good at jogging and needs to try something else.
3. Which is the BEST example of the kind of mechanics that are studied in sports biometrics?
A.
the average attendance at a sporting event
B.
how a new sport becomes popular in a community
C.
the movement of the wrist when hitting a tennis ball
D.
the median height of the most successful hockey goalies
4. Ewan had a resting heart rate of about 110. What does this indicate?
A.
His heart rate is perfectly average.
B.
He probably has a high metabolism.
C.
He needs to work on raising his resting heart rate.
D.
His heart rate is high and could indicate a problem.
5. Why is acceptance an important part of building a healthy lifestyle?
A.
Exercise will probably not change much in your life.
B.
Healthy lifestyles often create a lot of disappointment.
C.
If you understand your limitations, you are less likely to be frustrated.
D.
Finding the energy to exercise can be hard, so you should limit your goals.
PLEASE NO LINKS
the weight of a box having of 100 kg is __n
Answer:
mom
Explanation:
helppppppp meeee please
Answer:
B.X substance = sulfur dioxide, Y substances = sodium carbonate
Explanation:
sorry for wrong because that is my predicted
A roller is pushed with a force of 100 N along its handle, which is at an angle of 60 degrees with the horizontal. Find the work done in moving it through 20 m?
Answer:
1 kJ
Explanation:
By definition of work, [tex]W = \vec F \cdot \vec x = |\vec F| |\vec x| cos\angle Fx[/tex]. Let's replace the values: [tex]W = 100N\cdot 20m \cdot cos 60 = 1000 J[/tex]
why is the cooling system in a nuclear power station important? what will happen if the system malfunction?
Career discovery
English language art
Science
Studiesi
Answer:
you could become a science teacher and if you do english literature too then an english teacher
Explanation:
you will just need to get good GCSEs and if you want to you can further your education. e.g, college, university.
How do you find out the missing masses in a balloon
Answer:
How do you find out the missing masses in a balloon?
Well, actually you can't find the missing masses in a balloon. Why?
Because the mass of the mass of balloon, it can't see the mass of it, it only see if it the balloon is deflated or inflated.
Explanation:
Hope it helps
#LetsStudy
calculate the mass fo an unknown solid if its density is 1.6 g/cm^3 and it has a length of 7.5 cm, a height of 12.5 cm, and a width of 2.2 cm
Answer:
Density = Mass / Volume
Mass = Density * volume = 1.6 gm/cm^3 * (7.5 * 12.5 * 2.2) cm^3
Mass = 1.6 gm/cm^3 * (206 cm^3) = 330 gm
Determine the force required to move a block if the coefficient of static friction of one block and the floor is 0.35 and the coefficient of the static friction between 2 boxes is 0.25
Answer:
32.5
Explanation:
Choose the normal force acting between the object and the ground. Let's assume a normal force of 250 N .
Determine the friction coefficient. ...
Multiply these values by each other: (250 N) * 0.13 = 32.5 N .
You just found the force of friction!
Make a
claim about whether a mixture could be made
up of only elements and no compounds.
Summarize evidence to support the claim and
explain your reasoning.
Answer:
Yes, a mixture can be made up of just elements and no compounds. The elements never experiance a chemical interaction and stay only in physical contact with each other.
BRAILIEST PLS I NEED LEVEL UP!
100 POINTS!! PLEASE DONT ANSWER UNLESS YOU KNOW BOTH ANSWERS PLEASE.
If a bike hits a rock and suddenly stops, the rider flies over the handlebars due to ________.
A. absolute zero B. displacement C. inertia D. electromagnetic spectrum
During a track meet, Sarah ran 400m in 80s. What was her average speed? (Remember s=d/t)
A. 5 m/s
B. 20 m/s
C. 15 m/s
D. 15 mph
Answer:
1. is B and 2. is A
Explanation:
Answer:
1. Displacement
2. 5 m/s 400 ÷ 80 = 5
Explanation:
write a relations between wavelength frequency and velocity for a sound wave
Answer:
[tex]{ \boxed{ \mathfrak{answer : \: { \rm{v = f \lambda}}}}}[/tex]
Explanation:
v is the velocityf is frequencylambda is wavelength[tex]{ \underline{ \mathfrak{ \green{Good \: grace}} \: \:⚜ \: \: { \blue{ \mathfrak{Good \: God}}}}}[/tex]
2. Elements in a family have the same
A. total number of electrons
B. protons and neutrons
C. number of valence electrons
Answer:
Elements in a family have the same
Ans C. number of valence electrons
look at picture, need to know net force, whether they are balanced or unbalanced and whether they are accelerated or not accelerated!
Answer:
1) 100 ...unb. and accelerate
2) 7...unb. and accelerate
You place a small sphere with a net charge of 5 space x space 10 to the power of negative 6 end exponent space C at one corner of a square that measures 5 m on each side. What is the magnitude of the electric field at the opposite corner of the square?
900 N/C
9,000 N/C
450 N/C
4,500 N/C
Find a unit vector perpendicular to the vectors given A=4i+2j+2k and B=4i-4j+8k.
The cross product of A and B is perpendicular to both A and B.
A × B = (4i + 2j + 2k) × (4i - 4j + 8k)
A × B = 16 (i × i) - 16 (i × j) + 32 (i × k) + 8 (j × i) - 8 (j × j) + 16 (j × k) + 8 (k × i) - 8 (k × j) + 16 (k × k)
A × B = -16 (i × j) - 32 (k × i) - 8 (i × j) + 16 (j × k) + 8 (k × i) + 8 (j × k)
A × B = -16k - 32j - 8k + 16i + 8j + 8i
A × B = 24i - 24j - 24k
The magnitude of A × B is
||A × B|| = 24 ||i - j - k|| = 24√3
Dividing A × B by its magnitude gives a unit vector,
(A × B)/||A × B|| = 1/√3 (i - j - k)
2. A roller coaster moves 85 m horizontally, then travels 45 m at an angle of
30.0° above the horizontal. What is its displacement from its starting
point? Use graphical techniques.
What is the net force needed to accelerate a 1 kg textbook with an acceleration of
4 m/s2
Answer:
4 NExplanation:
The force acting on an object given it's mass and acceleration can be found by using the formula
force = mass × acceleration
From the question
mass = 1 kg
acceleration = 4 m/s²
We have
force = 1 × 4 = 4
We have the final answer as
4 NHope this helps you
3 points
A science teacher is going to make a Newton's Cradle using students on
swings. *
A
B C
Which of the following statements is true?
Answer:
When a ball on one end of the cradle is pulled away from the others and then released, it strikes the next ball in the cradle, which remains.
So it will be D
Explanation: Hope this helps :)
