Question
Calculate the total energy of a satellite and define binding energy.
✓
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
An equilateral triangle ABC is formed by two Cu rods AB and BC and one Al rod. It is heated in such a way that temperature of each rod increases by $\Delta\text{T}$. Find change in the angle ABC. $[$Coeff. of linear expansion for 1 Cu is $\alpha_1$ Coeff. of linear expansion for 2Al is $\alpha_2]$
→The position of a particle is given by $\text{r}=3.0\text{t}\hat{\text{i}}-2.0\text{t}^2\hat{\text{j}}+4.0\hat{\text{k }}\text{m}$ Where t is in seconds and the coefficients have the proper units for r to be in metres. (a) Find the v and a of the particle? (b) What is the magnitude and direction of velocity of the particle at t = 2.0s?
→- The magnetic field in a region varies as shown in figure. Calculate the average induced emf in a conducting loop of area $2.0 \times 10^{-3}m^2$ placed perpendicular to the field in each of the $10ms$ intervals shown.
- In which intervals is the emf not constant? Neglect the behaviour near the ends of 10ms intervals.
An icebox almost completely filled with ice at $0^\circ C$ is dipped into a large volume of water at $20^\circ C$. The box has walls of surface area $2400cm^2$, thickness $2.0mm$ and thermal conductivity $0.06\text{Wm}^{-1}{^{\circ}}\text{C}^{-1}.$ Calculate the rate at which the ice melts in the box. Latent heat of fusion of ice $= 3.4\times10^5\text{Jkg}^{-1}.$
→Natural water contains a small amount of tritium $\big(\text{ }^3_1\text{H}\big).$ This isotope beta-decays with a half-life of $12.5$ years. A mountaineer while climbing towards a difficult peak finds debris of some earlier unsuccessful attempt. Among other things he finds a sealed bottled of whisky. On returning, he analyses the whisky and finds that it contains only $1.5$ per cent of the $\text{}^3_1\text{H}$ radioactivity as compared to a recently purchased bottle marked '$8$ years old'. Estimate the time of that unsuccessful attempt.
→A spherical ball of surface area $20 \mathrm{~cm}^2$ absorbs any radiation that falls on it. It is suspended in a closed box maintained at $57^{\circ} \mathrm{C}$.
a. Find the amount of radiation falling on the ball per second.
b. Find the net rate of heat flow to or from the ball at an instant when its temperature is $200^{\circ} \mathrm{C}$. Stefan constant $=$ $6.0 \times 10^{-8} \mathrm{Wm}^{-2} \mathrm{~K}^{-4}$.
→a. Find the amount of radiation falling on the ball per second.
b. Find the net rate of heat flow to or from the ball at an instant when its temperature is $200^{\circ} \mathrm{C}$. Stefan constant $=$ $6.0 \times 10^{-8} \mathrm{Wm}^{-2} \mathrm{~K}^{-4}$.
Take $\text{C}_1=4.0\mu\text{F}$ and $\text{C}_2=6.0\mu\text{F}$ in figure. Calculate the equivalent capacitance of the combination between the points indicated.
→The descending pulley shown in figure has a radius $20cm$ and moment of inertia $0.20kg-m^2$. The fixed pulley is light and the horizontal plane frictionless. Find the acceleration of the block if its mass is $1.0kg$.
→An electric current flows in a wire from north to south. What will be the direction of the magnetic field due to this wire at a point east of the wire? West of the wire? Vertically above the wire? Vertically below the wire?
The bob A of a pendulum released from horizontal to the vertical hits another bob B of the same mass at rest on a table as shown in.
If the length of the pendulum is 1m, calculate.
If the length of the pendulum is 1m, calculate.
- The height to which bob A will rise after collision.
- The speed with which bob B starts moving. Neglect the size of the bobs and assume the collision to be elastic.