Question
Explain Aristotle's Fallacy and Galileo's refutation.

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

Similar questions

Given below are some functions of x and t to represent the displacement of an elastic wave.$​​​​\text{y}=100\cos(100\pi\text{t+0.5x})$
Figure shows two blocks A and B, each having a mass of 320g connected by a light string passing over a smooth light pulley. The horizontal surface on which the block A can slide is smooth. The block A is attached to a spring of spring constant 40N/m whose other end is fixed to a support 40cm above the horizontal surface. Initially, the spring is vertical and unstretched when the system is released to move. Find the velocity of the block A at the instant it breaks off the surface below it. Take $g = 10m/s^2$.
An air chamber of volume $V$ has a neck of the area of cross-section $A$ into which a ball of mass $m$ can move without friction. Show that when the ball is pressed down through some distance and released, the ball executes SHM. Obtain the formula for the time period of this SHM, assuming pressure-volume variations of the air to be
i. isothermal and
ii. adiabatic.
A solid sphere rolls down two different inclined planes of the same heights but different angles of inclination.
  1. Will it reach the bottom with the same speed in each case?
  2. Will it take longer to roll down one plane than the other?
  3. If so, which one and why?
A body describes simple harmonic motion with an amplitude of 5cm and a period of 0.2s. Find the acceleration and velocity of the body when the displacement is (a) 5cm (b) 3cm (c) 0cm.
Calculate the number of degrees of freedom of molecules of hydrogen in $1cc$ of hydrogen gas at NTP.
A thin rod having length $L_0$ at $0°C$ and coefficient of linear expansion $\alpha$ has its two ends maintained at temperatures $\theta_1$ and $\theta_2,$ respectively. Find its new length.
A mass m is placed on a platform from a height 'h'. The platform is attached to a spring whose other end is fixed to the ground. Find the compression in the spring, if the spring constant is k.
Two metre scales, one of steel and the other of aluminium, agree at $20^{\circ} \mathrm{C}$. Calculate the ratio aluminium-centimetre/ steel-centimetre at:
a. $0^{\circ} \mathrm{C}$,
b. $40^{\circ} \mathrm{C}$
c. $100 \mathrm{C} . \alpha$ for steel $=1.1 \times 10^{-5}{ }^{\circ} \mathrm{C}{ }^{-1}$ and for aluminium $=2.3 \times 10^{-5}{ }^{\circ} \mathrm{C}^{-1}$.
Earth’s orbit is an ellipse with eccentricity $0.0167$. Thus, earth’s distance from the sun and speed as it moves around the sun varies from day to day. This means that the length of the solar day is not constant through the year. Assume that earth’s spin axis is normal to its orbital plane and find out the length of the shortest and the longest day. A day should be taken from noon to noon. Does this explain variation of length of the day during the year?