Answer:
Melting of ice is an endothermic process, meaning that energy is absorbed. When ice spontaneously melts, ΔH (change in enthalpy) is "positive". ΔS (entropy change) is also positive, because, becoming a liquid, water molecules lose their fixed position in the ice crystal, and become more disorganized. ΔG (free energy of reaction) is negative when a reaction proceeds spontaneously, as it happens in this case. Ice spontaneously melts at temperatures higher than 0°C. However, liquid water also spontaneously freezes at temperatures below 0°C. Therefore the temperature is instrumental in determining which "melting" of ice, or "freezing" of water becomes spontaneous. The whole process is summarized in the Gibbs free energy equation:
Explanation:
Answer:
False , irregular galaxies are not large galaxy.
Explanation:
False , irregular galaxies are not large galaxy.
There is no specific shape of irregular galaxies. They are one of the tiniest galaxies, filled with gas and dust. Having lots of dust and gas means there's a lot of star formation heading at these galaxies. This process can make them very clear. some examples of these type of galaxies are the Major and minor Magellanic Clouds.
C.) Transmission
D.) Emission
Answer:
magnitude of force is 1725 N
direction is opposite to the direction of car moving i.e west
Explanation:
Given data
car mass = 1380 kg
speed = 27.0 m/s
time = 8 s
speed = 17 m/s
to find out
magnitude and direction of the net force
solution
we find here first acceleration thats formula is
a = v(initial) - v(final) / time
a =27 - 17 / 8
acceleration = 1.25 m/s
so force is = ma
force is = 1380 ( 1.25)
force = 1725 N
so magnitude of force is 1725 N
and this is here direction is opposite to the direction of car moving i.e west
The net force that leads to the deceleration of the 1380 kg car from 27.0 m/s to 17.0 m/s over 8.00 seconds has a magnitude of 1725 N and is directed towards the west.
To solve for the magnitude and direction of the net force that produces the deceleration in the car, you first need to calculate the acceleration and then use it to find the net force using the formula f = m * a. The acceleration here represents a deceleration because the speed is decreasing.
Acceleration can be found using the formula a = (v_f - v_i) / t. Here, v_i is the initial speed (27.0 m/s), v_f is the final speed (17.0 m/s), and t is the time interval (8.00 s). This gives you a = (17.0 m/s - 27.0 m/s) / 8.00 s = -1.25 m/s^2. The negative sign represents deceleration.
Now, apply this deceleration to the formula for force, f = m * a. Here, m is the mass of the car (1380 kg) and a is the value we computed (-1.25 m/s^2). So, f = 1380 kg * -1.25 m/s^2 = -1725 N. The negative sign indicates that the force is in the direction opposite to the initial motion of the car. Therefore, the magnitude of the net force is 1725 N, and the direction is towards the west or opposite to the car's original path.
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As resistance increases in a circuit, the current flowing through the circuit decreases.
This is because resistance opposes the flow of current, so as resistance increases, it becomes more difficult for the current to flow.
This is described by Ohm's Law, which states that the current in a circuit is directly proportional to the voltage and inversely proportional to the resistance.
Therefore, as resistance increases, the current must decrease in order to maintain the same voltage in the circuit.
To know more about current refer brainly.com/question/29396299
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