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olga2289 [7]
2 years ago
10

Qué representa el lanzamiento vertical ascendente

Physics
1 answer:
rusak2 [61]2 years ago
6 0

Answer:

Uhhhhh? can u explains? lol

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What is the timeline for the law of conservation of energy
kirill [66]
In 1842, Julius Robert Mayer discovered The law of conservation of Energy. It its most compact form, it it  now called The first law of Thermodynamics

Energy can neither be created nor destroyed, it can only be changed to another form of energy.
4 0
3 years ago
A 400-n block is dragged along a horizontal surface by an applied force as shown. the coefficient of kinetic friction is uk = 0.
gulaghasi [49]
The block moves with constant velocity: for Newton's second law, this means that the resultant of the forces acting on the block is zero, because the acceleration is zero.

We are only concerned about the horizontal direction, and there are only two forces acting along this direction: the force F pushing the block and the frictional force F_f acting against the motion. Since their resultant must be zero, we have:
F-F_f = 0
The frictional force is
F_f = \mu mg
where
\mu=0.4 is the coefficient of kinetic friction
mg=400 N is the weight of the block. 

Substituting these values, we find the magnitude of the force F:
F=F_f = \mu mg=(0.4 )(400 N)=160 N
4 0
3 years ago
Terry usually rides his bike at 15mph. If his speed is reduced by 3 mph , how far can he ride in 1.7 hours ?
kakasveta [241]
105 miles because you have to use the gif arable
7 0
3 years ago
 I will mark you as brainliest if you answer correctly
aleksklad [387]
(A) We can solve the problem by using Ohm's law, which states:
V=IR
where
V is the potential difference across the electrical device
I is the current through the device
R is its resistance
For the heater coil in the problem, we know V=220 V and R=220 \Omega, therefore we can rearrange Ohm's law to find the current through the device:
I= \frac{V}{R}= \frac{220 V}{220 \Omega}=1 A

(B) The resistance of a conductive wire depends on three factors. In fact, it is given by:
R= \rho \frac{L}{A}
where
\rho is the resistivity of the material of the wire
L is the length of the wire
A is the cross-sectional area of the wire
Basically, we see that the longer the wire, the larger its resistance; and the larger the section of the wire, the smaller its resistance.
6 0
3 years ago
When heating water, during what temperature range will the temperature cease to change for some time?
Morgarella [4.7K]

Answer: Option (B) is the correct answer.

Explanation:

As we know that the temperature when the vapor pressure of liquid becomes equal to the atmospheric pressure surrounding the liquid. And, during this temperature liquid state of substance changes into vapor state.

But during this process of change in state of substance the temperature will cease to change for some time because unless and until all the liquid molecules do not convert into vapor state the temperature will not rise or change.

As the boiling point of water is 100^{o}C so the temperature ceases to change from 98^{o}C to 102^{o}C.

Therefore, we can conclude that when heating water, during 98^{o}C to 102^{o}C temperature range the temperature will cease to change for some time.

7 0
3 years ago
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