Answer:
A
Explanation:
doldrums just took the test
C. Why atomic clocks tick more slowly when in motion
D. Why no object can move faster than light through space-time
30 sec
3.0 sec
300 sec
2. Explain Distance
3. Differentiate between distance and position.
Note : All these questions are under Physics.
Answer:
1-Simple harmonic motion, in physics, repetitive movement back and forth through an equilibrium, or central, position, so that the maximum displacement on one side of this position is equal to the maximum displacement on the other side. The time interval of each complete vibration is the same
2-Distance is a numerical measurement of how far apart objects or points are. In physics or everyday usage, distance may refer to a physical length or an estimation based on other criteria (e.g. "two counties over"). The distance from a point A to a point B is sometimes denoted as
3-Position is the location of the object (whether it's a person, a ball, or a particle) at a given moment in time. Displacement is the difference in the object's position from one time to another. Distance is the total amount the object has traveled in a certain period of time.
Explanation:
hope it help
Answer: The ice and shel are at the same temperature.
Explanation: Conduction happens when you have two objects at different temperatures touching each other, in this case, the temperature flows from the hot object to the cold one, until the equilibrium is reached (this means that both objects are at the same temperature). So, in order to conduction to happen, we need a difference in temperature and direct contact. So there are two options of the given that can be the answer: "There is no direct contact" In the sentence says that "the ice is placed on the freezer shelf", so we have direct contact between both objects. "The ice and shelf are at the same temperature" Here both objects are inside of the freezer, so we can expect that both of them are at the same temperature, hence, there is no conduction.
Answer:
the correct answer is d
Explanation:
4.22 dollars is the cost to leave the bulb on for 30 days.
Electrical energy is the power an atom's charged particles have to cause an action or move an object. The movement of electrons from one atom to another is what results in electrical energy.
There is a dissipation of electrical energy in the resistor when an electric current flows through it. It depends on the resistance of the resistor and the applied voltage.
The expression of the power dissipation is as follows ;
P=
V is the applied voltage.
R is the resistance.
Given
P = 60 W
30days * 24h/day = 720 Hours kW * h
Therefore by putting the values in the given formula,
= (60/1000)kW * 720h
= 43.2 kWh
Hence,
The cost is 42.2 kWh42.2 kWh x 0.1
= 4.22 dollars
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The gravitational potential energy of an object Is always measured relative to the height of the object. It has the equation equal to mass PE = mgh where PE is the potential energy, m is the mass of the object, H is the height of the object and g is the acceleration due to gravity.
The gravitational potential of an object is always measured relative to reference level/another point
Energy is the ability to do work. Energy can change from one energy to another
Gravitational potential energy is the energy that an object has because of its position
The potential energy can be formulated:
Ep = m. g. h
E = potential energy of an object, joule
m = object mass, kg
g = gravity acceleration, m / s2
h = height of an object, m
The higher the object from the surface of the earth and the greater the mass, the greater the potential energy of the object. Earth's gravity also affects the potential energy of objects
Potential energy itself includes mechanical energy
Em = Ek + Ep
Em = mechanical energy
Ek = kinetic energy
Ep = potential energy
The amount of kinetic energy and potential energy of objects is always constant
Determine how potential and kinetic energy changes at each position of the pendulum
Determine the mechanical energy
the potential of an object when it falls from a height
the gravitational potential energy between moon and earth
Keywords: the potential energy, kinetic energy, mechanical energy