Different velocity-time graph lines are shown, displaying the behavior of multiple race carts along a linear track.Which description correctly identifies cart C?
A) Has a positive acceleration and is speeding up.
B) Moving with zero acceleration.
C) Moving at a constant acceleration.
D) Has a negative acceleration and is slowing down.
Answers
B) Moving with zero acceleration.
Explanation:
Acceleration is defined as the rate of change of the velocity per unit time:
In a velocity-time graph, this ratio corresponds to the slope of the curve. In fact:
(change in velocity) corresponds to the increase in the y-axis
(change in time) corresponds to the increase in the x-axis
So, acceleration corresponds to the slope of the curve in a velocity-time graph. For cart C, the slope is zero, therefore the acceleration is also zero.
Answer:
B) Moving with zero acceleration.
Explanation:
As we can see the graph for Cart C that its velocity is constant and not changing its magnitude as well as its sign
So here the magnitude and direction is constant so we can say that velocity will remain constant always.
Where we can define the acceleration as
so here if magnitude and direction both are constant so
so we can say that acceleration of cart C is ZERO
so correct answer will be
B) Moving with zero acceleration.
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b. flash floods
c. traveling without a compass, map, or GPS
d. a liquid spill on the floor that was not cleaned
Answers
A liquid spill on the floor that was not cleaned could be a potential safety hazard of indoor recreation.
NOT:
a. slippery rocks and loose gravel
b. flash floods
c. traveling without a compass, map, or GPS
Answer:
THE ANSWER IS D
Explanation:
Answers
The Tiger has a mass of 34 Kg and runs with a speed of 8.5 m/s, the Connecticut Energy of the tiger 289 Kg m/s.
What is meant by Momentum?
The momentum of an object is defined as the product of mass and velocity of the object.
Mathematically, the momentum of an object is given as;
P = mv
where;
m is the mass of the object
v is the velocity of the object
The principle of conservation of linear momentum states that the total momentum of an isolated system is always conserved.
That is the sum of initial momentum of the system is equal to the sum of the final momentum of the system.
Mass of tiger , m = 34 kg .
Velocity of tiger , v = 8.5 m/s .
Substituting the above values in given formula,
P = mv
= 34 × 8.5
= 289 Kg m/s.
The Connecticut Energy of the tiger 289 Kg m/s.
Learn more about Momentum,
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Answer:
The kinetic energy of the tiger is 1228.25 J.
Explanation:
KE=1/2m*v^2
m=34
v=8.5
KE=1/2*34*8.5^2
KE=17*72.25
KE=1228.25 J
B.) False
Answers
Answers
The earth connection is because the earth connection(third cable) helps to prevent the casing from turning into a live wire.
What are the three cables?
It is normal to find that the cable that is used in the pressing iron has three wires that connect to live, neutral and earth. The earth connection is very important in the pressing iron.
The reason why we ought to have the earth connection is because the earth connection helps to prevent the casing from turning into a live wire.
Learn more about pressing iron:brainly.com/question/9664475?
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Compared to the sound waves detected by the
driver of the truck, the sound waves detected by
the observer have a greater
(1) wavelength (3) period
(2) frequency (4) speed
Answers
Answer: The correct option is (2).
Explanation:
Doppler effect is the phenomenon in which the frequency of the wave increase or decrease when there is relative motion between the source and the listener. There is an apparent change in the frequency.
When the source and the listener are approaching each other then there will be increase in the frequency.
When the source and the listener are moving away form each other then there will be decrease in the frequency.
In the given problem, Sound waves are produced by the horn of a truck
that is approaching a stationary observer. The sound waves detected by the observer have greater frequency.
Therefore, the correct option is (2).
Answers
Answer:
To calculate the net electric flux through a cube placed in a uniform electric field, you can use Gauss's Law, which states that the electric flux (Φ) through a closed surface is equal to the electric field (E) times the surface area (A) and is also equal to the enclosed charge (Q) divided by the permittivity of free space (ε₀):
Φ = E * A = Q / ε₀
In this case, the cube has a side length of 1 meter, so its surface area (A) is 6 square meters (since there are 6 faces of a cube). The electric field (E) is given as 10⁴ N/C î, and there is no mention of any enclosed charge (Q) within the cube.
Now, calculate the electric flux:
Φ = E * A = (10⁴ N/C) * (6 m²) = 60,000 N m²/C
The unit of electric flux is N m²/C.
So, the net electric flux through the cube is 60,000 N m²/C, which is not one of the provided answer choices. However, if you convert this to the preferred unit of electric flux, which is N m² c⁻¹, you get:
60,000 N m²/C = 60,000 N m² c⁻¹
So, the answer closest to this value is (c) 5 x 10⁴ N m² c⁻¹.
Explanation:
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