In a series circuit, the current in all points of the circuit is the same. Hence, current through the resistor r2 is same as that of r1 that is 1.5 amperes.
A circuit is the path through which current is passing which can be of open circuit or closed circuit. There are two ways in which the components are connected in the circuit namely, series and parallel.
In a series circuit, the electrical components are connected in a series fashion. Here, the current is the same in all points of the series circuit. But voltage will be different.
In the case of parallel circuits, the components are connected in a parallel fashion. The current passing through each parallelly connected device will be different.
Here, the two resistors are connected in series. Hence, the current passing through is the same that is 1.5 A for r2 also.
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Answer: The temperature of the water falls by 3.3°C
Explanation:
The heat change is related to the change in temperature by the equation
dH = m Cp dT
In this example, -2665 J = 193 g x 4.184 J/g°C x dT
so dT = -3.3 °C
Answer:
1. Heavy mass
2. greater charge
Explanation:
An alpha particle has two protons and two neutrons. It has +2 e charge. It is a heavy mass particle. Thus, when it tends to penetrate even a thin sheet, it loses its energy very quickly because of its interaction with the material particles.
Beta particle is a high energy electron or positron. It carries 1 unit charge and has very less mass in comparison to an alpha particle. Thus, it has more penetrating power than alpha particle.
A gamma particle is charge less and mass less highly energetic particle. Thus, it has highest penetrating power.
a battery
B.
a generator
C.
mechanical energy
D.
electromagnetic energy
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Answer:
C. Mechanical Energy
Explanation:
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If a horse has a kinetic energy of 29,400 Joules if the horse has a mass of 300 kilograms, then the speed of the horse would be 14 m / s.
Mechanical energy is the combination of all the energy in motion represented by total kinetic energy and the total stored energy in the system which is represented by total potential energy.
The expression for total mechanical energy is as follows
ME = PE + KE
As given in the problem a horse has a kinetic energy of 29,400 j if the horse has a mass of 300 kg,
The kinetic energy of the horse = 0.5 × 300 × v²
29400 = 150 × v²
v = 14 m / s
Thus , If a horse has a kinetic energy of 29,400 Joules if the horse has a mass of 300 kilograms, then the speed of the horse would be 14 m / s.
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