The magnitude of the linear impulse are 336.57 N sec
Impulse is the critical of a force, F, over the time c language, t, for which it acts. seeing that pressure is a vector quantity, the impulse is likewise a vector quantity. Impulse implemented to an item produces an equal vector trade in its linear momentum, additionally inside the resultant course.
Calculation:-
mass = 70 kg
acceleration = (4.80 - 0 ) / 0.848
= 5.67 m/s²
Force = mass × acceleration
= 70 × 5.67
= 396.9 N
Impulse = force × time
= 396.9 N × 0.848 s
= 336.57 N sec
An impulse is an unexpected pressure or preference — this will be an electrical impulse or an impulse to get some pizza. in case you act on a sudden feeling or notion, you are following an impulse. it is like a whim: an impulse isn't always something you've given numerous ideas.
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laser light (λ = 568.7 nm) is incident on a single slit. what is the maximum width of the slit (in nm) for which no diffraction minima are observed? round to the closest integer.
The maximum width of the slit (in nm) for which no diffraction minima are observed is 569 nm.
What is the maximum width of the slit?The maximum width of the slit (in nm) for which no diffraction minima are observed is calculated by applying the following equation.
sinθ = mλ/a
where;
m is = 1 order integerthe maximum angle for diffraction to occur = 90⁰λ is the wavelength = 568.7 nma is the maximum width of the slitSubstitute the given parameters and solve for the maximum width of the slit (in nm) for which no diffraction minima are observed.
sin(90) = (1 x 568.7 nm) / a
1 = (568.7 nm) / a
a = (568.7 nm) /1
a = 568.7 nm
to the closest integer = 569 nm
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Two identical objects A and B fall from rest from different heights to the ground and feel no appreciable air resistance. If object B takes TWICE as long as object A to reach the ground, what is the ratio of the heights from which A and B fell?
The ratio of the heights from which A and B fell is 1:4.
What is the time of motion of a projectile?The time of motion of a projectile is the time taken for a projectile to fall from the given height to ground level.
Mathematically, the formula for time of motion is given as;
t = √(2h/g)
h = ¹/₂gt²
where;
h is the height of fall of the objectt is the time of motion of the objectg is acceleration due to gravity2h/t² = g
2h₁/t₁² = 2h₂/t₂²
h₁/t₁² = h₂/t₂²
let the time of motion of object A = t
let the time of motion of object B = 2t
height of fall of object A = h₁
height of fall of object B = h₂
h₁/h₂ = t₁²/t₂²
h₁/h₂ = (t²)/(2t)²
h₁/h₂ = (t²)/(4t²)
h₁/h₂ = 1/4
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How might these traits change from individual to individual? (Hint: Do you think the newts are all exactly the same color or size?)
Although newts are born in water, they spend the majority of their life on land, going back to the water only to reproduce. They are 8 inches long, with rough skin, stubby legs, and fangs. Some of those in the Pacific Northwest are poisonous.
What are traits?A discrete variation of an organism's characteristic that is visible, quantifiable, and shows itself in an observable way is called a phenotypic trait (also known as a trait or character state).
For instance, polygenetic inheritance is used to pass on phenotypic traits such as eye color (green, blue, brown, and hazel).
Phenotypes include things like height, wing length, and hair colour. Observable characteristics that can be measured in a laboratory, such as hormone levels or blood cell counts, are frequently included in phenotypes.
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What is the momentum of a 100000 kg truck whose velocity?
The truck has a velocity of 10 m/s, then its momentum would be: 1,000,000 kgm/s.
What is velocity?
Velocity is indeed the direction at which an object is moving and serves as a measure of the rate at which its position is changing as seen from a specific point of view and as measured by a specific unit of time (for example, 60 km/h northbound). In kinematics, the area of classical mechanics that deals with the motion of bodies, velocity is a fundamental idea. A physical vector quantity called velocity must have both a magnitude and a direction in order to be defined. Speed is the scalar exact number (magnitude) of velocity; it is a coherent derived unit for whom the quantity is measured in metres per second (m/s or m/s1) in the SI (metric system). In contrast to "5 metres per second east," which is a vector, "5 metres per second," for instance, is a scalar.
The momentum of the 100000 kg truck is equal to the product of its mass and velocity. Therefore, if the velocity of the truck is given, the momentum can be calculated using the following equation:
Momentum = Mass x Velocity
For example, if the truck has a velocity of 10 m/s, then its momentum would be 100000 kg x 10 m/s = 1,000,000 kgm/s.
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give the relationship between current, Resistance and potential difference
Explanation:
Current can be defined as the rate of flow of electric charge along a conductor.
Resistance can be defined as the opposition to the flow of charged electrons or current, it's unit is OhmWe observe a cluster and determine that only stars above 15 solar masses have left the main sequence.
i.) Would you expect to see any giants/supergiants in this cluster at
this time? Why or why not?
ii.) Would you expect to see any white dwarfs in this cluster at this
time? Why or why not?
When we observe a cluster to determine that only 15 solar masses have left the main sequence, we expect to see any giant/ supergiant but, dwarfs are not visible.
i.) As the cluster's age increases, the mass of the main sequence turnoff stars decreases. According to the H-R diagram, stars with mass 3 times more than the mass of sun are large, hot and bright. They have short life span and are on the upper right region of the graph, hence they have low temperature and high luminosity. They have large diameter, so we can expect to see giants/ supergiant but disappear at the blink of our eye.
ii) For the white dwarfs to be visible, the temperature should be high, luminosity should be low and the mass should be less, almost 8 solar masses. Since, 15 solar masses have left the sequence, white dwarfs will not be visible.
Hence, giants/supergiant can be seen for a short period of time when 15 solar masses leave the main sequence, but white dwarf will not be seen.
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Jesse is walking on the sand at the beach one summer day. If heat is not flowing between her feet and the sand, which of the following must be true?
If Jesse is walking through the sand on a hot day and no heat is flowing between his feet and the sand, it means that the sand and his feet are at the same temperature. So the correct option is C.
Why are they at the same temperature?It is said that your feet and the sand will be at the same temperature because heat will not flow towards them, since for there to be a flow of heat, the feet should be colder than the sand. The heat will always go from the hottest place to the coldest place, so being both at the same temperature, the flow of heat will not occur.
This happens when one of the objects is exothermic, that is, it releases heat. If the sand were hotter it would be exothermic, throwing its heat at the feet, which is not the case.
Therefore, we can confirm that the correct option is C. The sand is the same temperature as her feet.
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Jesse is walking on the sand at the beach one summer day. If heat is not flowing between her feet and the sand, which of the following must be true?
A. The sand is wet.
B. The sand is too cold for heat to flow.
C. The sand is the same temperature as her feet.
D. There is no friction between her feet and the sand.
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A plane accelerates from rest at a constant rate of 5.00 m/s2 along a runway that is 1800 m long. Assume that the plane reaches the required takeoff velocity at the end of the runway. What is the distance dfirst traveled by the plane in the first second of its run?
The distance travelled by the plane in the first second of its run is 5m.
What is Velocity?Velocity is defined as the rate of change of a body’s position with respect to time. Velocity is basically speeding in a specific direction. It is a vector quantity, which means we need both magnitude (speed) and direction to define velocity. If there is a change in magnitude or the direction of velocity of a body, then it is said to be accelerating.
From the question;
velocity (acceleration) = 5m/s2
distance = 1800m
so, to find the distance travelled in the first second;
time = 1 second
using the formula; [tex]velocity = \frac{displacement}{time}[/tex]
therefore; displacement = velocity x time
displacement = 5 x 1
displacement = 5m
In conclusion, the plane travelled 5m in the first second of its run.
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