Answer:
350 N
Explanation:
From the question given above, the following data were obtained:
Mass (m) of Go Kart = 35 kg
Initial velocity (u) = 12 m/s
Distance (s) = 7.2 m
Force (F) =?
Next, we shall determine the acceleration of the Go Kart. This can be obtained as follow:
Initial velocity (u) = 12 m/s
Distance (s) = 7.2 m
Final velocity (v) = 0 m/s
Acceleration (a) =.?
v² = u² + 2as
0² = 12² + (2 × a × 7.2)
0 = 144 + 14.4a
Collect like terms
0 – 144 = 14.4a
– 144 = 14.4a
Divide both side by 14.4
a = – 144 / 14.4
a = – 10 m/s²
The negative sign indicate that the Go Kart is decelerating when the brake was applied.
Finally, we shall determine the force the Go Kart have when the student locked the brake. This can be obtained as follow:
Mass (m) of Go Kart = 35 kg
Acceleration (a) = 10 m/s
Force (F) =?
F = ma
F = 35 × 10
F = 350 N
Thus, the Go Kart has a force of 350 N when the student locked the brake.
If the mirror moves at 1.5m/s towards Peter while Peter remains at rest, what will he observe? Explain your reasoning
Answer:
Peters image will grow bigger
Explanation:
In this situation, only Peter is at rest and the mirror is in motion at 1.5m/s heading towards Peter.
From afar, Peter will look small in the mirror that is his image will be small When the mirror is moved at 1.5m/s Peter being the observer will notice that his image grows bigger and bigger.
Which formula can be used to find the X component of the resultant vector?
Answer:
If you are simply looking for the X component then the most applicable formula from the choices given is Tx + Ux+ Vx. This means that you will add all x-components. For example: If a man walking along the x-axis walks 10 meters to the right, 5 back and 2 meters forward, what is the resultant vector?
Convert 1 second into solar day.
DIVIDE 1 BY 86400 TO CONVERT 1 SECOND INTO SOLAR DAY.
What happens as the frequency of a wave increases?
Answer:
The number of complete wavelengths in a given unit of time is called frequency (f). As a wavelength increases in size, its frequency and energy (E) decrease. From these equations you may realize that as the frequency increases, the wavelength gets shorter. As the frequency decreases, the wavelength gets longer.
Explanation:
please mark me as brainliest thank you
The number of complete wavelengths in a given time is called frequency (f). As a wavelength increases in size, its frequency and energy (E) decrease.
what is frequency ?The frequency referred to the number of oscillation per unit time and it is used for defining the cyclic process like rotation, oscillation, wave etc.
The SI unit is denoted as Hertz and the symbol λ represents it where one hertz means the wave completed one cycle in one second.
The frequency explains the phenomenon of oscillatory and vibration like the mechanical vibration, sound signals, light, frequency waves etc. The “period” represented as the time required by the wave for one oscillation, i.e., it is inversely proportional to the frequency.
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How much thermal energy is absorbed by
1.00X102 g of ice at -20.0°C to become
water at 0.0°C?
Answer:
4202.4 J
Explanation:
The formula for calculating the heat absorbed by ice to melt into water is given by :
ΔH = Cp × m × Δ T -------where ;
Cp =specific heat of ice = 2.06 J/g° C
m= mass of ice = 102 g
ΔT = 0°C--20°C = 20°C
Thermal energy absorbed by the ice will be;
ΔH = Cp × m × Δ T
ΔH = 2.06 * 102 * 20
ΔH =4202.4 J
Having Good Posture
A. puts unnecessary strain on joints& ligaments
B. can lead to injury
C. Decreases blood flow to extrmities
D. Is especially important during physical activity
Answer:
D
Explanation: need good posture other wise will injury yourself during activity
Special ways that animals' bodies work to help them survive in whatev
condition they're in, such as camels in the desert conserving water and
able to go days without drinking is what type of adaptation? *
Answer:
Physiological – special ways that animals' bodies work to help them survive in whatever condition they're in, such as camels in the desert conserving water and being able to go days without drinking.
Explanation:
When two objects interact they exert forces on each other. Will these forces act in the same direction or in opposite directions?
When two objects interact, they exert forces on each other. These forces act in opposite directions.
What is Newton's third law of motion?According to Newton's third law of motion, every action has an equal and opposite reaction. As well as, the action and reaction are always acted in pairs.
When two things collide, they exert forces on one another. These forces have opposing effects.
When two objects interact, they exert forces on each other. These forces act in opposite directions.
Hence,these forces act in opposite directions.
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If an object has zero acceleration, does that mean that its velocity is zero? Give an example.
Answer:
Yes, an object that was set in motion in the past by some force, but that is no longer being acted on by a net force, is moving but with zero acceleration, i.e. it is moving at constant velocity. For example, a puck sliding along a horizontal plane of ice after being hit with a hockey stick.
describe the movement of a transverse wave please i will give brainliest and the max points
Answer: Movement in which all positions of both the waves rotate around the directions at right angles to the axis of the wave's movement.
Explanation: Hope this help
density of iron is 8000kg/m cube .calculate the mass of iron is 8000kg/m cube .calculate the mass of iron contained by 5m cube of iron block
answer:
40,000 kg
explanation:density=mass/volume
then mass=density×volume
= 8000× 5
=40,000 kg
What is the average velocity of the car over the first 0.25m? ___m/s
What is the average velocity of the car over the second 0.25m? ___m/s
Answer:
first one : 0.11
second one : 0.28
Explanation:
I took the test and got it right!!!!!
which statement describes the effects of forces on an object
Answer:
Sorry this isn’t going to be any help. You don’t have any statement that I’m able to see.
Explanation:
Look at the pic please
Answer:
your answer is B) i hope this helps you and have a good day.
A bat emits a pulse of sound of wavelength 0.0085 m. Calculate the frequency of the sound.
Answer:
v = 4.0 10⁴ Hz
Explanation:
The bat emits sound in the air, so we can use the speed of sound in air
v = 344 m / s
also the expression that relates the wavelength and frequency with the speed of the wave
v = λ f
f = v / λ
let's calculate
v = 344/0.0085
v = 4.0 10⁴ Hz
HI thts way tooo much to answer but ye...d;
A vat of ethyl alcohol expands
by 0.00823 m^3 when the
temperature is raised by 44.8°C.
What was the original volume of
the alcohol?
Ethyl Alcohol B = 1120 10-C-1
(Unit = m^3)
Answer: .164
Explanation:
1120x10^6 is the coefficient for ethyl alcohol b
(.00823)/(1120x10^-6)(44.8) which gives you your answer: 0.164 m^3
A vat of ethyl alcohol expands by 0.00823 m^3 when the temperature is raised by 44.8°C. The original volume of the alcohol is 0.164m³.
What is volume ?A measurement of three-dimensional space is volume. It is frequently expressed quantitatively using SI-derived units, as well as several imperial or US-standard units. Volume and the notion of length are connected.
The capacity of an object is measured by its volume. For instance, a cup's capacity is stated to be 100 ml if it can hold 100 ml of water in its brim. The quantity of space occupied by a three-dimensional object can also be used to describe volume.
A three-dimensional object's volume is the area it takes up, and it is expressed in cubic units. Cm3 and in3 are two examples of cubic units. The amount of matter in an item can be determined by its mass, on the other hand.
1120 x 10⁶ is the coefficient for ethyl alcohol b
= (.00823 ) / ( 1120 x 10⁻⁶) ( 44.8 )
= 0.164 m³
Thus, The original volume of the alcohol is 0.164m³.
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HELP PLS !!!!!!!!!!!!!
Explanation:
Weight on Earth = 784N.
Mass of Person = 784N / (9.81N/kg) = 79.9kg.
Weight on Moon = (79.9kg)(1.60N/kg) = 128N. (3s.f.)
A pirate’s map has you traveling 8 m N and 10 m W. It takes you 22 seconds to complete the distance. What is your speed?
Most of the lactic acid produced by anaerobic respiration in muscle fibers is reconverted to glucose in the?
Answer
liver
Explanation:
Once sufficient oxygen is restored, the lactic acid produced via anaerobic glycolysis can be utilized for energy or reconverted into glucose by the liver and other tissues (a process known as oxidation).
According to the law of conservation of energy, which changes would
increase the total energy of a system?
A. An addition of 400 J of GPE and a loss of 250 J of thermal energy
B. An addition of 100 J of thermal energy and a loss of 450 J of
kinetic energy
C. An addition of 200 J of kinetic energy and a loss of 250 J of
thermal energy
D. An addition of 300 J of thermal energy and a loss of 450 J of
kinetic energy
Answer:
Correct option is (a)
Explanation:
According to conservation of energy: Total energy of system remains conserved or we can say total energy = constant
(a) 400J of GPE is added and 250J of thermal energy is lost
⇒ Total energy = 400-250 J = 150 J
hence, 150J energy is increased
(b) 100J of thermal energy is added and 450J of kinetic energy is lost
⇒ Total energy = 100-450 J = -350 J
hence, 350J energy is decreased or lost by system
(c)200J of kinetic energy is added and 250J of thermal energy is lost
⇒ Total energy = 200-250 J = -50 J
hence, 50J energy is decreased or lost by system
(d)300J of thermal energy is added and 450J of kinetic energy is lost
⇒ Total energy = 300-450 J = -150 J
hence, 150J energy is decreased or lost by system
Therefore, correct option is (a)
Explanation:
According to conservation of energy: Total energy of system remains conserved or we can say total energy = constant
(a) 400J of GPE is added and 250J of thermal energy is lost
⇒ Total energy = 400-250 J = 150 J
hence, 150J energy is increased
(b) 100J of thermal energy is added and 450J of kinetic energy is lost
⇒ Total energy = 100-450 J = -350 J
hence, 350J energy is decreased or lost by system
(c)200J of kinetic energy is added and 250J of thermal energy is lost
⇒ Total energy = 200-250 J = -50 J
hence, 50J energy is decreased or lost by system
(d)300J of thermal energy is added and 450J of kinetic energy is lost
⇒ Total energy = 300-450 J = -150 J
hence, 150J energy is decreased or lost by system
Therefore, correct option is (a)
10) If you shine blue and red light on a white object it appears to be violet. * 1 point
True
Or
False
Answer:true
Explanation:
what is meaning of saniya?
Answer:
“brilliant, radiant, splendid”.
Explanation:
- What is an earthquake?
Answer:
A earthquake is the shaking of the surface of the Earth resulting from a sudden release of energy in the Earth's lithosphere that creates seismic waves
Water exists as ice, water or steam. (a) Complete the sentences. Choose the answers from the box. ice steam water The particles are arranged in a regular pattern in ____________________ . The particles are close together but not in a pattern in ____________________ . The particles move quickly in all directions in ____________________ .
Explanation:
The options are; Ice Steam and Water.
The state of matter associated with the options are;
Ice - Solid
Steam - Gas
Water- Liquid
The particles are arranged in a regular pattern in ____________________
Among all the state of matter, the particles are closely packed and in an ordered manner is observed in the solid state - Ice
The particles are close together but not in a pattern in ____________________
In the liquid state of matter, the particles are not as tightly bounded as that of the solid. Hence they are able to still move around a bit. - Water
The particles move quickly in all directions in ____________________
The particles of the gaseous state move in all directions colliding with each other and the walls of the container. - Steam
During a spring tide, the high tides are very high and the low tides are very low. Why does this occur?
Image result for During a spring tide, the high tides are very high and the low tides are very low. Why does this occur?
In both cases, the gravitational pull of the sun is 'added' to the gravitational pull of the moon on Earth, causing the oceans to bulge a bit more than usual. This means that high tides are higher and low tides are lower than average. These are called 'spring tides. '
brainliest please?
Answer:
In both cases, the gravitational pull of the sun is 'added' to the gravitational pull of the moon on Earth, causing the oceans to bulge a bit more than usual. This means that high tides are higher and low tides are lower than average. These are called 'spring tides. '
I’ll literlly give you points
and make you brainiest
Answer:
a
Explanation:
Two objects are dropped in vacuum chamber from the same height: a marble and a bowling ball. Which of the following are true? (Mark two answers)
The bowling ball will accelerate faster
After 1 second both objects will have the same acceleration
In a vacuum objects can't move
Both objects will reach the ground at the same speed
The marble will remain in the air longer
Answer:
After one second both objects will have the same acceleration
Both objects will reach the ground at the same speed
Explanation:
Because a vaccum chamber is a free fall place
how does the eye control the amount of light entering it?
Answer: Hello there
Explanation:
The colored part of the eye which helps regulate the amount of light entering the eye. When there is bright light, the iris closes the pupil to let in less light. And when there is low light, the iris opens up the pupil to let in more light. Focuses light rays onto the retina.
I have the answer I just need it worked out, thank you.
A dry cleaner throws a 22 kg bag of laundry onto a stationary 9 kg cart. The cart and bag begin moving at 3 m/s to the right. Find the velocity of the bag before the collision. (4.2 m/s)
Answer:
Vbag = 4.22 [m/s]
Explanation:
In order to solve this problem we must use the principle of conservation of momentum. Which tells us that the momentum of a system is preserved before and after a collision.
Let's take both movements (bag and cart) as positive, since they both move in the same direction. Now everything that happens before the collision will be taken to the left of the equation and after the collision to the right of the equal sign.
[tex](m_{bag}*v_{bag})=(m_{bag}+m_{cart})*v_{final}[/tex]
where:
mbag = mass of the bag = 22 [kg]
vbag = velocity of the bag [m/s]
mcart = mass of the cart = 9 [kg]
vfinal = mass of both bodies moving together = 3 [m/s]
Now replacing:
[tex](22*v_{bag})=(22+9)*3\\22*v_{bag}=93\\v_{bag}=4.22[m/s][/tex]
EM waves consist of changing electric and magnetic fields moving perpendicular with respect to each other. What kind of wave is it?
-Transverse waves
-Longitudinal waves
-Mechanical waves
-Compressional waves
Answer:
Transverse
Explanation:
Electromagnetic waves don't depend on the medium they travel through like a mechanical wave does, so they aren't mechanical. They don't oscillate (move back in forth) in the direction they travel either, ruling out compressional and longitudinal waves.
That leaves tranverse waves, the ones we're most used to, since they look very "wavelike," with smooth peaks and valleys. Electromagnic waves behave like these, oscillating in a plane perpendicular to the direction they're traveling in.