scalar
diagonal
vector
A quantity that has magnitude only is a scalar. In Physics, a quantity with only magnitude is called a scalar. Scalar quantities include distance, speed, mass, temperature, and energy. They are distinguished from vectors which have both magnitude and direction.
A scalar is a fundamental concept in mathematics and physics, representing a single quantity with magnitude but no direction. Scalars are characterized solely by their numerical value, such as speed or temperature. Unlike vectors, which have both magnitude and direction, scalars are concerned with the "how much" rather than the "where" or "in which direction." Scalars are used in various fields, from physics to mathematics and engineering, simplifying the description of quantities that don't involve direction, making calculations and analysis more straightforward.
A quantity that has magnitude only is referred to as a scalar. In Physics, quantities are typically classified into two types: scalars and vectors. A scalar quantity is defined by its magnitude alone, with no direction associated with it. Examples of scalar quantities include distance, speed, mass, temperature, and energy. On the contrary, a vector has both magnitude and direction. Hence, the correct answer to your question is scalar.
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Answer:
scalar
Explanation:
Compared to the sound waves detected by the
driver of the truck, the sound waves detected by
the observer have a greater
(1) wavelength (3) period
(2) frequency (4) speed
Answer: The correct option is (2).
Explanation:
Doppler effect is the phenomenon in which the frequency of the wave increase or decrease when there is relative motion between the source and the listener. There is an apparent change in the frequency.
When the source and the listener are approaching each other then there will be increase in the frequency.
When the source and the listener are moving away form each other then there will be decrease in the frequency.
In the given problem, Sound waves are produced by the horn of a truck
that is approaching a stationary observer. The sound waves detected by the observer have greater frequency.
Therefore, the correct option is (2).
The statement that weather differs from climate in that weather can change on a daily basis and is not considered a description of year-to-year conditions of temperature and precipitation is true. While the climate pertains to the atmospheric conditions over long periods of time.
Answer: true
Explanation:
got it right on edge
Answer:
Mass and weight would stay the same. However, the normal force between the person and the ground becomes smaller, making the weight of the person appear smaller.
Explanation:
The mass of an object is an intrinsic property. The mass of the object stays the same regardless of the motion of the object or the forces acting on the object. As a result, when the elevator accelerates downwards, the mass of this person would stay the same.
The weight of an object refers to the gravitational force on this object.
The gravitational force on an object is the product of the mass and the strength of the gravitational field:
.
The gravitational field strength near the surface of the Earth is mostly uniform (.) Since the mass of this person stays the same, the weight of this person would also stay the same.
When a person stands on level ground, forces on this person would include:
The net force on this person would be:
.
Rearrange this equation to obtain an expression for normal force:
.
When the person is not moving, acceleration of the person would be zero. By Newton's Laws of Motion, the net force on this person would also be zero.
In the equation above, the magnitude of the normal force would be equal to the magnitude of weight. It would appear that the normal force on the person is equal in magnitude to the weight of this person.
However, when the person accelerates in the vertical direction, the net force on the person will become non-zero in the vertical direction. Normal force would no longer be equal in magnitude to weight.
Specifically, when the person accelerates downward in this elevator, acceleration of this person would point downward. Net force on this person would also point downward.
In the equation , also points downward. However, because of the negative sign and would be in opposite directions.
Additionally, the magnitude of net force cannot exceed the magnitude of weight. As a result, the magnitude of the sum of these two vectors would be smaller than the magnitude of weight.
The normal force on this object is equal to the sum of these two vectors. As a result, the magnitude of normal force would also be smaller than the magnitude when the person isn't moving. It would appear as if the apparent weight of this person has become smaller than the original value.
Answer : The maximum concentration of silver ion is
Solution : Given,
for AgBr =
Concentration of NaBr solution = 0.1 m
The equilibrium reaction for NaBr solution is,
The concentration of NaBr solution is 0.1 m that means,
The equilibrium reaction for AgBr is,
At equilibrium s s
The expression for solubility product constant for AgBr is,
The concentration of = s
The concentration of = 0.1 + s
Now put all the given values in expression, we get
By rearranging the terms, we get the value of 's'
Therefore, the maximum concentration of silver ion is .