a. Which force supports the car’s weight? ______________________________
b. Which force accelerates the car down the ramp? ______________________________
c. Which force acts against the motion of the car? ______________________________
Answers
1) Reaction
2) Gravitational force
3) Frictional force
Explanation
Reaction is directly opposite and equal to action(normal force). The normal force is the weight. So we can say that reaction supports the weight of the car.
Objects fall downwards due to acceleration due to gravity. The acceleration force is provided by the gravitational force. The car is accelerated downwards by the gravitational force.
Frictional force is the force that opposes relative motion between two bodies. When iar is involved, we call it viscosity. So the force that acts against the motion of the car is friction.
Answer:
For plato users: C.The number of positive and negative charges can be the same.
B. orange
C. red
D. violet
The longest wavelength within the visible spectrum is red light. The correct option is C.
The visible spectrum of light consists of different colors ranging from red to violet. Each color corresponds to a different wavelength. Among the given options, red light has the longest wavelength within the visible spectrum.
A. blue: Blue light has a shorter wavelength compared to red light. It is located on the shorter end of the visible spectrum.
B. orange: Orange light has a shorter wavelength compared to red light. It falls between red and yellow on the visible spectrum.
C. red: Red light has the longest wavelength among the visible colors. It is located on the longer end of the visible spectrum.
D. violet: Violet light has a shorter wavelength compared to red light. It is located on the shorter end of the visible spectrum, just after blue.
Therefore, the correct option is C. red as it has the longest wavelength within the visible spectrum.
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c. convection
b. radiation
d. heat
Answer:
B or the second option (Radiation) for Edg 2020
Explanation:
b) energy
c) matter and energy
d) the medium
Waves carries energy among the given options. Hence, option (b) is correct.
A wave is a dynamic disturbance that propagates and causes a change in equilibrium of one or more parameters in physics, mathematics, and related subjects. Quantities may oscillate regularly around an equilibrium (resting) value at certain frequency if a wave is periodic.
A travelling wave is one in which the entire waveform moves in one direction; in contrast, a standing wave is one in which two periodic waves are overlaid and move in the opposing directions. In a standing wave, there are some points where the wave amplitude seems reduced or even zero, and these positions have null vibration amplitudes.
Wave equations (standing wave fields of two opposing waves) or one-way wave equations (single wave propagation in a certain direction) are frequently used to describe waves.
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