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matin
Questions (13)
Cherenkov radiation is light emitted by a particle moving through a medium with a speed greater than the speed of light in the
0 answers
648 views
Why is glass transparent to visible light but opaque to ultraviolet or infrared light ?? can anyone give me a detailed
0 answers
489 views
When a photon bounce off an electron, it gives some of its energy to the electron. The photon has no mass, however, and it must
3 answers
532 views
The Bohr model of the hydrogen atom consists of an electron travelling in a circular orbit of radius 5.29 x 10-11 m around a
2 answers
994 views
The gravitational field intensity at a height of 150 km above the surface of Uranus is 8.71 N/kg. The radius of Uranus is 2.56 x
1 answer
1,255 views
A 3.0 g ping pong ball is suspended from a thread 35 cm long. When a comb is brought to the same height, the ping pong ball is
1 answer
832 views
Three charges sit on the vertices of an equilateral triangle, the side of which are 30.0 cm long. If the charges are A = +4.0
4 answers
2,248 views
Consider a charge of +2.0 C placed at the origin of an X-Y co-ordinate system and a charge of -4.0 C placed 40.0 cm to the
1 answer
1,249 views
Both positive and negative charges produce electric fields. Which direction, toward or away from itself, does the field point
1 answer
420 views
A rocket is launched vertically from Earth's surface with a velocity of 3.4 km/s. How high does it go:
From Earth's centre? From
1 answer
3,135 views
A projectile is shot from the edge of a cliff 125 m above ground level with an initial speed of 105 m/s at an angle of 37.0o
3 answers
10,941 views
Tarzan (mass 100 kg) holds one end of an ideal vine (infinitely strong, completely flexible, but having zero mass). The vine
0 answers
924 views
square root for 8
1 answer
317 views
