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When all the air molecules in the room settled down in a thin film on the floor, would that violate the conservation of momentum and also conservation of energy?
A laser beam of 8.6mW consists of its electric field vertical. When it passes via a polarizer with its transmission axis at 45 to the vertical, find out the power of the transmitted beam?
Polarized light passes via a polarizer and just 30% gets through. Determine the angle among the light's electric field and the polarizer's transmission axis.
A sodium lamp employed to calibrate a diffraction grating exhibits the first-order sodium line at 24.3 from the central maximum. i) Determine the angular position of the first spectral line in hydroge
If Venus is close to Earth and it emerges in a crescent phase. You can see this by employing a good pair of binoculars. i) Employ the astronomical data to find out the angular width of Venus if it is
A red laser of 630 nm is aimed via a 0.122 mm diameter circular pinhole. In the resultant diffraction pattern, find out the angle from the central maximum to the first dark ring?
The bright yellow sodium line in the sodium spectrum is in reality a pair of closely spaced lines at around 589.0 nm and 589.6 nm. You view the sodium spectrum by using a diffraction grating having
If the switch is closed and the coil carries a current I, a mass m should be added to the right side to balance the system. i) Determine an expression for the magnitude of the magnetic field and find
a siren consist of an intensity of around 107.2 W/m2 at a certain point, and a second sound wave from a close by ambulance consists of an intensity level 9 dB greater than the siren's sound wave at
A typical cell phone conveys microwaves having peak output power of around 2 W. When you suppose the cell phone is a point source, determine what would be radiated power at your brain 5 cm away from
Find out the induced emf in a circle of tissue of radium 1.6 mm which is perpendicular to the direction of the field.
Your instructor asks you to design and build a refracting telescope encompassing a magnification of 45 by employing an available eyepiece of focal length 4.0 cm. Determine how long must you make the
If water freezes, it expands around 9.00%. Determine what would be the pressure raise within your automobile engine block when the water in it froze? The bulk modulus of ice is around 2.00 x 10^9 N/
If an acid solution weighing 57.012 g was added to the tablet, carbon-dioxide gas was released, generating a fizz. The resultant solution weighed 57.743 g. Determine how many grams of carbon-dioxide
Volcanoes emit a lot hydrogen sulphide gas, H2S that reacts with the oxygen in the air to form water and sulphur dioxide, SO2. Each and every 66 tons of H2S reacts with the 93 tons of oxygen and makes
A mass of 100 g is joined to one end of a mass less rod, 10 cm in length, which is pivoted around the opposite end. The rod is held vertical, having the mass at the top and released. The rod swings.
The object is held at rest in a position in such a way that the spring is stretched upward a distance 1.00 cm beyond the undisturbed length. When the object is released, determine how far will it dr
Two broad, square, metal plates having sides L and a small separation d carry opposite charges Q and -Q. Find out the energy stored in the configuration?
An object of 0.500 kg rests on the horizontal frictionless surface. It is in a position in such a way that it is compressing a spring a distance of 12.0 cm. When the object is released, the object l
A ball is thrown from the edge of a high cliff of 20.0 m having a speed of 20.0 m/s at an angle of 30.0° beneath horizontal. Find out the speed of the ball when it strikes the ground beneath the
A car on the roller coaster begins at zero speed at an elevation over the ground of 26 m. It coasts down a slope and then climbs a hill. The top of the hill is at an elevation of around 16 m. Determ
Determine how fast does the shark encompass to swim perpendicular to the magnetic field of earth (B = 30 micro-teslas) in order to notice the magnetic field of earth with such organs?
Put a compass on the table. Now put a positively charged bar on the table east of the compass and slide it towards the compass, the compass needle will: Rotate either clockwise or counter-clockwise
You are holding one end of the elastic cord which is fastened to a wall 3.0 away. You start shaking the end of the cord at 2.8, making a continuous sinusoidal wave of wavelength 1.0m. Determine how
A ball of 100 g and a ball of 240 g are joined by a 34-cm-long, mass-less, rigid rod. The balls rotate around their center of mass at 120 rpm. Determine the speed of the 100 g ball?