Relative velocity.....Please help....
Answers
Answer:
3. Usinθ
Explanation:
The vertical component of velocity of any object reaching maximum height is 0 and the horizontal component of velocity of any object in flight remains constant.
Therefore the horizontal component of velocity is Ucosθ for both objects at any given time.
At maximum height A is having 0 vertical velocity but B which just starting its flight is having Usinθ as its vetical component of velocity.
Velocity of B relative to A = Velocity of B - Velocity of A
As velocity can be resolved to components,( to simplify the sum )
Horizontal component of velocity of B relative to A = Horizontal component of velocity of B - Horizontal component of velocity of A
which is 3. Usinθ
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What is the difference between distance and displacement? Give an example of a situation where distance and displacement both have the same magnitude. Give another example, where distance and displacement have different values. Make sure to address the terms "vector" and "scalar" in your response.
Which of the following statements is true? A) An object that is accelerating is always changing direction. B) An object at rest has an instantaneous acceleration of zero. C) Instantaneous acceleration is always changing. D) An object that is accelerating is always changing speed.
Mechanical energy is the sum of kinetic energy and all forms of potential energy that an object has.Please select the best answer from the choices providedt or f
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B). Does not dissolve in water
C). Forms crystal structures
D). Does not conduct electricity
Answers
Answer:
The answer is D
Explanation:
Ionic compounds have high melting and boiling points.They can dissolve in water.And they donot form crystal structurs by dissolving.And they donot conduct electricity.
Final answer:
Table salt (an ionic compound) forms crystal structures, similar to other ionic compounds, due to the strong electrostatic forces holding its ions in a well-organized lattice. So the correct option is C.
Explanation:
The property of table salt, which is also a property of other ionic compounds, is that it forms crystal structures. Table salt, like all ionic solids, exhibits a crystalline structure because its ions are held together by strong electrostatic forces of attraction in a rigid and well-organized lattice. In contrast, ionic compounds typically have high melting points, dissolve in water, and can conduct electricity when dissolved or molten because ions are free to move, allowing for the flow of electric charge.
Learn more about the Properties of Ionic Compounds here:
#SPJ2
Answers
14.5 Ω
24 Ω
12 Ω
17.3 Ω
Answers
Answer:
answer is 24 ohm okkkkkm
Answers
Answer:If the forces on an object are balanced, the net force is zero.
Explanation:
If the forces are unbalanced forces, the effects don't cancel each other. Any time the forces acting on an object are unbalanced, the net force is not zero, and the motion of the object changes.
Answers
Answer: A
destructive interference
Explanation: Interference involves coming together of two waves of the same type. E.g sound waves, water waves e.t.c
Whenever two waves of different amplitude interferes with one another and there is increase in amplitude, this is known as constructive interference.
But whenever there is decrease in amplitude as a result of interference of the two waves, this is known as destructive interference.
If Two waves with amplitudes of 52 units and 98 units come together. Their amplitude, which is measured at a specific point and time, is 46 units. The wave behavior that explains this value is destructive interference because of decrease in the units of amplitude.
Answer:
destructive interference
Explanation: Plato user