Answer : I = 8.33 A
Explanation :
It is given that,
Power rating of the toaster, P = 1000 watts
Household voltage, V = 120 volts
We know the relation between power, voltage and the current is :
8.33 A of current runs through the toaster.
Hence, this is the required solution.
A bumper car with a mass of 200 kilograms traveling at a velocity of 3.5 meters/second collides with a stationary bumper car with a mass of 250 kilograms. the kinetic energy of the system after the collision is 1190,25 J.
The energy is the ability to work or produce action or movement and it manifests itself in many different ways mostly body movement, heat, electricity, etc.
The different types of energy are Kinetic energy is associated with the movement of bodies. Potential energy which is stored form of energy by virtue of a body's position relative to its surface is also called gravitational potential energy.
Thermal Energy associated with the kinetic energy of the molecules that make up an element, Chemical energy released from chemical reactions, Solar energy released from sunlight.
Ek = (m·V²)/2
V - velocity of system after the collision
m = m1 + m2
Ek = (m1 + m2)·V²/2
Ek = (200 +250)·2,3²/2 = 450·5,29/2 = 1190,25 J
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The required period of the wave is 0.125 seconds.
In physics, frequency and period are two related concepts that are used to describe the properties of waves. Period, on the other hand, is a measure of the time it takes for one complete cycle of a wave.
Frequency is a measure of how many cycles of a wave occur in one second. It is measured in units of Hertz (Hz), which is defined as cycles per second.
Here,
The period (T) of a wave is the time it takes for one complete cycle of the wave. It is related to the frequency (f) of the wave by the formula:
T = 1/f
Where T is in seconds and f is in Hertz (Hz).
Given that the frequency of the wave is 8 Hz, we can calculate the period as follows,
T = 1/f
T = 1/8
T = 0.125 seconds
Therefore, the period of the wave is 0.125 seconds.
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Draw the incident ray so it is longer than the reflected ray.
Make the angle of reflection and the angle of incidence equal.
Switch the labels for incident ray and reflected ray.
Make the angle of incidence larger than the angle of reflection.
Answer:
Make the angle of reflection and the angle of incidence equal.
Explanation:
The law of reflection states that at the point of incidence on a smooth surface, the angle of incidence is equal to the angle of reflection, The incident ray, the normal and the reflected ray lie on the same plane.
Answer:
B. Make the angle of reflection and the angle of incidence equal
Explanation:
Answer:
D.
Explanation:
Explanation:
Total mass = 90 + 90 + 30 kg = 210 kg
Normal force = 210 kg ( 9.81 m/s^2) = 2060.1 N
Force of friction to overcome = normal force x coeff of static friction
F = 2060.1 x .15 = ~ 309 N to get the cart moving...