Download App

PART - 1 CH - 3 Motion in a Plane — Physics STD 11 Science — Question

Gujarat BoardEnglish MediumSTD 11 SciencePhysicsPART - 1 CH - 3 Motion in a Plane5 Marks
Question
Explain the resolution of a vector in a threedimensional coordinate system and prove that
$
|\overrightarrow{A}|=\sqrt{A_x^2+A_y^2+A_z^2}
$
✓

Answer

self

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Explore more

More "5 Marks Questions" from PART - 1 CH - 3 Motion in a Plane→PART - 1 CH - 3 Motion in a Plane — all question types→Physics STD 11 Science question papers→Gujarat Board STD 11 Science question papers→Gujarat Board question paper generator→

Similar questions

The wavelength of sodium light in air is 589nm.
  1. Find its frequency in air.
  2. Find its wavelength in water (refractive index = 1.33).
  3. Find its frequency in water.
  4. Find its speed in water.
→
A block of mass $2.0kg$ kept at rest on an inclined plane of inclination $37°$ is pulled up the plane by applying a constant force of $20N$ parallel to the incline. The force acts for one second.
  1. Show that the work done by the applied force does not exceed $40J$.
  2. Find the work done by the force of gravity in that one second if the work done by the applied force is 40J.
  3. Find the kinetic energy of the block at the instant the force ceases to act. Take $g = 10m/s^2$.
→
A vessel of volume $V_0$ contains an ideal gas at pressure $P_0$ and temperature T. Gas is continuously pumped out of this vessel at a constant volume-rate dV I dt = r keeping the temperature constant. The pressure of the gas being taken out equals the pressure inside the vessel. Find, (1) the pressure of the gas as a function of time. (2) the time taken before half the original gas is pumped out.
→
Show that in case of one dimensional elastic collision of two bodies, the relative velocity of separation after the collision is equal to the relative velocity of approach before the collision.
→
At what temperature is the root mean square speed of oxygen atom equal to the r.m.s. speed of helium gas atom at $-10^\circ C$? Atomic mass of oxygen = $32$ and that of helium = $4.0$.
→
State Kepler's laws on planetary motion. Explain the way the three laws can be proved.
→
When slow neutrons are incident on a target containing $\frac{235}{92}\text{U},$ a possible fission reaction is $\frac{235}{92}\text{U}+_0^1\text{n}\rightarrow\frac{141}{56}\text{Ba}+\frac{92}{36}\text{Kr}+3_0\text{n}^1$ Estimate the amount of energy released using following data : $\text{M}\Big(\frac{235}{92}\text{U}\Big)=235.04\text{amu}$ $\Big(\text{M}\frac{92}{36}\text{Kr}\Big)=91.926\text{amu}$ $\text{M}\Big(\frac{141}{56}\text{Ba}\Big)=140.91\text{amu}$ $\text{M}=1.0087\text{ amu}$
→
Estimate the average thermal energy of a helium atom at:
  1. Room temperature $(27°C)$
  2. The temperature on the surface of the Sun(6000K)
  3. The temperature of 10 million kelvin (the typical core temperature in the case of a star).
→
An ideal gas having density $1.7 \times 10^{-3} \mathrm{~g}-\mathrm{cm}^{-3}$ at a pressure $1.5 \times 10^5 \mathrm{~Pa}$ is filled in a Kundt tube. When the gas is resonated at a frequency of 3.0 KHz , nodes are formed at a separation of 6.0 cm . Calculate the molar heat capacities $C_P$ and $C_V$ of the gas.
→
A block of mass m moving with speed v compresses a spring through a distance x before its speed is halved. What is the value of spring constant?
→