The two variables that affect current in a circuit according to Ohm's law are voltage and resistance. If voltage increases, current increases assuming resistance remains constant. Conversely, if resistance increases, current decreases.
According to Ohm's law, the two variables that affect the amount of current in a circuit are voltage and resistance. If the voltage in a circuit is increased, according to Ohm's law, so is the current, providing the resistance doesn't change. On the other hand, if the resistance in a circuit is increased, the current is reduced.
For instance, if we consider a simple electric circuit with a battery and a light bulb. If the voltage of the battery is increased, more current will flow, and the light bulb will shine brighter. However, if the resistance (for example by adding another light bulb in series) is increased, less current will flow, and the bulbs will be dimmer.
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Displacement:
Distance: The total distance traveled is the sum of the individual distances traveled in each direction. In this case, you moved 25 meters North and then 50 meters West. So, the total distance is:
Distance = 25 m (North) + 50 m (West) = 75 meters
Displacement: Displacement is the straight-line distance from the starting point to the final point, taking into account both the distance and direction. To calculate the displacement, you can use the Pythagorean theorem because the motion is in perpendicular directions (North and West).
Displacement = √((25 m)² + (50 m)²)
Displacement = √(625 m² + 2500 m²)
Displacement = √(3125 m²)
Displacement = 55.9 meters (rounded to one decimal place)
-the total displacement is approximately 55.9 meters in a direction that is between North and West.
If you are riding a skateboard and hit something like a curb with the front wheels then the skateboard would stop due to the friction offered by the club but your body would fall forward due to the effect of that inertia.
According to Newton's first law, until pushed to alter its condition by the intervention of an external force,
Every object will continue to be at rest or in uniform motion along a single direction until/unless some external force is applied.
When the front wheels of a skateboard collide with something like a curb, then the skateboard will halt because of the friction created by the object, but your body will fall forward as a result of the inertia.
Learn more about Newton's First Law here, refer to the link;
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water are found to have decreased.
Name and describe the process that causes the decrease in the volume of the water, and
explain why the temperature of the water decreases.
Answer: Evaporation and heat loss to the surrounding.
Explanation:
The process is known as evaporation.
Evaporation takes place at any temperature but increases with increase in temperature. The molecules of water evaporate, that is, escape into the atmosphere thereby causing the volume of water to reduce.
The temperature decreases due to heat loss from the water into the surrounding. This will cause the temperature of the water to drop.
Answer:
Because Moon and Mars has no atmosphere.
Explanation:
Moon and Mars has no atmosphere, so there is no friction on the falling object due to the atmosphere. The speed of the falling object is more at Moon and Mars.
When a small object impact on the surface of moon or Mars with high speed, the size of crater is large than the earth as out earth has atmosphere.
The largest craters on the Moon and Mercury are larger than those on Earth due to the Moon's and Mercury's geological inactivity, absence of substantial atmosphere, and lower frequency of erosional and tectonic processes. These conditions preserve the craters and allow for the conjecture of an impact origin of these features, as well as provide valuable clues into the historical events of the solar system.
The reason why the largest craters on the Moon and Mercury are much larger than the largest craters on Earth is primarily due to their geological and atmospheric differences. Both the Moon and Mercury are geologically inactive and lack substantial atmospheres. This means that their surfaces are not subjected to the same level of erosional processes present on Earth, like wind and water erosion, or tectonic activities that could erase or alter the appearance of craters over time.
Another important aspect is related to the frequency and scale of impact events. Crater formation rates on the Moon or Mercury can be estimated from the number of craters currently observable or from known quantities of existing cosmic debris (comets and asteroids), which can serve as potential projectiles. Given the extended geological timescales, large crater-forming impacts are relatively rare, occurring at a greater timescale than human history.
Furthermore, the size and shape of these craters often indicate an impact origin, as first proposed by prominent geologist Grove K. Gilbert in the 1890s. High velocity impacts result in explosive events that generate craters much larger than the size of the impacting body itself. Therefore, the size of lunar and Mercurian craters, as well as their count, can provide valuable insights into the history of our solar system.
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Answer:
0.044 seconds
Explanation:
Parameters given:
Length of nerve cell = 1.2m
Nerve impulse speed = 27m/s
Speed is given as:
Speed = distance/time
Therefore, we can make time the subject of the formula. We have:
Time = distance/speed
Hence, time taken for the nerve cell to travel this distance is:
Time = 1.2 / 27
Time = 0.044 seconds
It takes 0.044 seconds for the nerve signal to travel the distance of the nerve connecting the spinal cord to the feet.