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Physics-

General

Easy

Question

The position of a particle at any instant $t$ is given by $x equals a$ cos $omega t$ . The speed-time graph of the particle is

The correct answer is:

$therefore blank x equals a$ cos $omega t$
$therefore v equals fraction numerator d x over denominator d t end fraction equals negative a omega sin invisible function application omega t$
The instantaneous speed is given by modulus of instantaneous velocity.
$therefore blank$ speed $equals open vertical bar u close vertical bar equals open vertical bar negative a omega sin invisible function application omega t close vertical bar$
Hence, [c] is correct.

Related Questions to study

$triangle A B C$ is an Isosceles Triangle, if $A equals 92 to the power of ring operator end exponent$ then find ABD .

$triangle A B C$ is an Isosceles Triangle, if $A equals 92 to the power of ring operator end exponent$ then find ABD .

Lines PS, QT and RU intersect at a common point ‘O’. P is joined to Q, R to S and T to U to form triangles. Then find the value of $angle P plus angle Q plus angle R plus angle S plus angle T plus angle U equals$

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in $triangle A B C$ ,if $A equals x plus 20 to the power of ring operator comma B with blank below equals 2 open parentheses x minus 10 to the power of ring operator close parentheses comma C C equals 3 over 2 x$ then triangle is ..... triangle

in $triangle A B C$ ,if $A equals x plus 20 to the power of ring operator comma B with blank below equals 2 open parentheses x minus 10 to the power of ring operator close parentheses comma C C equals 3 over 2 x$ then triangle is ..... triangle

parallel

find the value of x in given figure. $blank l parallel to m$ and $text PI|Q end text$

find the value of x in given figure. $blank l parallel to m$ and $text PI|Q end text$

find the value of x in given figure.

find the value of x in given figure.

In the given figure, $angle 1 equals 8 x minus 6 to the power of ring operator end exponent comma angle 3 equals 3 x plus 4 to the power of ring operator end exponent$ and then find $angle 4 equals 4 x plus 2 to the power of ring operator end exponent$ then find $angle 1.$

In the given figure, $angle 1 equals 8 x minus 6 to the power of ring operator end exponent comma angle 3 equals 3 x plus 4 to the power of ring operator end exponent$ and then find $angle 4 equals 4 x plus 2 to the power of ring operator end exponent$ then find $angle 1.$

parallel

The value of $not stretchy integral subscript 0 end subscript superscript pi end superscript open vertical bar sin to the power of 3 end exponent invisible function application rightwards arrow over short leftwards arrow theta close vertical bar d theta$ is

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A spherical shell, made of material of electrical conductivity $fraction numerator 10 to the power of 9 end exponent over denominator pi end fraction left parenthesis capital omega minus m right parenthesis to the power of negative 1 end exponent$ has + - thickness t = 2 mm and radius r = 10 cm. In an arrangement, its inside surface is kept at a lower potential than its outside surface The resistance offered by the shell is equal to
"

A spherical shell, made of material of electrical conductivity $fraction numerator 10 to the power of 9 end exponent over denominator pi end fraction left parenthesis capital omega minus m right parenthesis to the power of negative 1 end exponent$ has + - thickness t = 2 mm and radius r = 10 cm. In an arrangement, its inside surface is kept at a lower potential than its outside surface The resistance offered by the shell is equal to
"

physics-General

In the shown wire frame, each side of a square (the smallest square) has a resistance R. The equivalent resistance of the circuit between the points A and B is :

In the shown wire frame, each side of a square (the smallest square) has a resistance R. The equivalent resistance of the circuit between the points A and B is :

physics-General

parallel

Two circular rings of identical radii and resistance of 36Weach are placed in such a way that they cross each other’s centre C1 and C2 as shown in figure. Conducting joints are made at intersection points A and B of the rings. An ideal cell of emf 20 volts is connected across AB. The power delivered by cell is

Two circular rings of identical radii and resistance of 36Weach are placed in such a way that they cross each other’s centre C1 and C2 as shown in figure. Conducting joints are made at intersection points A and B of the rings. An ideal cell of emf 20 volts is connected across AB. The power delivered by cell is

physics-General

A cell of emf E having an internal resistance 'r ' is connected to an external resistance R. The potential difference ' V ' across the resistance R varies with R as shown by the curve:

A cell of emf E having an internal resistance 'r ' is connected to an external resistance R. The potential difference ' V ' across the resistance R varies with R as shown by the curve:

physics-General

In a practical wheat stone bridge circuit as shown, when one more resistance of 100 W is connected is parallel with unknown resistance ' x ', then ratio $l subscript 1 end subscript$ ₁ $l subscript 2 end subscript$ become ' 2 '. l1 is balance length. AB is a uniform wire. Then value of ' x ' must be:

In a practical wheat stone bridge circuit as shown, when one more resistance of 100 W is connected is parallel with unknown resistance ' x ', then ratio $l subscript 1 end subscript$ ₁ $l subscript 2 end subscript$ become ' 2 '. l1 is balance length. AB is a uniform wire. Then value of ' x ' must be:

physics-General

parallel

In the figure shown the current flowing through 2 R is :

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physics-General

In the shown arrangement of the experiment of the meter bridge if AC corresponding to null deflection of galvanometer is x, what would be its value if the radius of the wire AB is doubled?

In the shown arrangement of the experiment of the meter bridge if AC corresponding to null deflection of galvanometer is x, what would be its value if the radius of the wire AB is doubled?

physics-General

In the circuit shown in the figure, the current through

In the circuit shown in the figure, the current through

physics-General

parallel

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