Question
Derive the equations of an object moving with uniform acceleration by graphical method
✓
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.
Explore more
Similar questions
A family uses 8kW of power.
- Direct solar energy is incident on the horizontal surface at an average rate of 200W per square meter. If 20% of this energy can be converted to useful electrical energy, how large an area is needed to supply 8kW?
- Compare this area to that of the roof of a typical house.
A conducting wire of length l, lying normal to a magnetic field B, moves with a velocity v, as shown in the figure.
- Find the average magnetic force on a free electron of the wire.
- Due to this magnetic force, electrons concentrate at one end, resulting in an electric field inside the wire. The redistribution stops when the electric force on the free electrons balances the magnetic force. Find the electric field developed inside the wire when the redistribution stops.
- What potential difference is developed between the ends of the wire?
Two billiard balls each of mass 0.05kg moving in opposite directions with speed 6ms-1 collide and rebound with the same speed. What is the impulse imparted to each ball due to the other?
An electron is emitted with negligible speed from the negative plate of a parallel-plate capacitor charged to a potential difference V. The separation between the plates is d and a magnetic field Bexists in the space, as shown in the figure. Show that the electron will fail to strike the upper plates if $\text{d}>\Big(\frac{2\text{m}_\text{e}\text{v}}{\text{eB}^2}\Big)^{\frac{1}{2}}.$
→
The conductivity of an intrinsic samiconductor depends on temperature as $\sigma=\sigma_0\text{ e}^{\frac{-\Delta\text{E}}{2\text{kT}}}$ where $\sigma_0$ is a constant. Find the temperature at which the conductivity pf an intrinsic germanium semiconductor will be double of its value at T = 300K. Assume that the gap for germanium is 0.650eV and remains constant as the temperature is increased.
→What are the three forms of energy possessed by a flowing fluid? Find their expressions.
Prove the following:
→- For two angles of projection $\theta$ and $(90-\theta)$ with same velocity v,
- Range is same.
- Heights are in the ratio tan2 : 1.
- If the range and maximum height are equal, the angle of projection is tan-1(4).
Figure. shows a large closed cylindrical tank containing water. Initially the air trapped above the water surface has a height h0 and pressure 2p0 where p0 is the atmospheric pressure. There is a hole in the wall of the tank at a depth h1 below the top from which water comes out. A long vertical tube is connected as shown.
- Find the height h2 of the water in the long tube above the top initially.
- Find the speed with which water comes out of the hole.
- Find the height of the water in the long tube above the top when the water stops coming out of the hole.
The illuminance of a small area changes from 900 lumen/m2 to 400 lumen/m2 when it is shifted along its normal by 10cm. Assuming that it is illuminated by a point source placed on the normal, find the distance between the source and the area in the original position.
A wire of length I and area of cross-section A is stretched by the application of a force. If the Young's modulus is Y, what is the work done per unit volume?