Physics question and answers for October 02, 2023
- Q examples of an insulator, a conductor, a semiconductor arerespectively?
- Q Find the radius of an electron's orbit when it movesperpendicular to a magnetic field of 0.46 T with a speed of6.29×105 m/s .Express your answer using two significant figures.
- Q Electric Potential and Potential Energy (Uniform Fields) Thepotential difference ∆V needed to stop a moving charged particle iscalled the “stopping potential.†Suppose a proton is moving in the+x direction with...
- Q A 1220-kg car pulls a 390-kg trailer. The car exerts ahorizontal force of 3.6 × 103 N against the ground inorder to accelerate.What force does the car exert on the...
- Q 1.The Celestar 8 telescope available in the Physics Lab isdescribed on Blackboard. The primary mirror of a Celestar 8 has anaperture of 203 mm, and the secondary mirror that blocks...
- Q A 7800 kg rocket blasts off vertically from the launch pad witha constant upward acceleration of 2.15 m/s2 and feels noappreciable air resistance. When it has reached a height of...
- Q Beginning with the Weizsäcker semi-empirical mass formula, showthat the minimum in a mass parabola occurs at a value of atomicnumber, Zmin, given byNote: The Weizsäcker semi-empirical mass formula for the...
- Q QUESTION 1If the metallic ball is launched at an angle of 25° above thehorizontal at a speed of 14 m/s. The ball returns to level ground.Which combination of changes must...
- Q A(n) 7.8-kg object is sliding across the ice at2.34 m/s in thepositive x direction. An internal explosion occurs,splitting the object into two equal chunks and adding 12 J ofkinetic energy...
- Q Two point charges totaling 9.00 µC exert a repulsive force of0.200 N on one another when separated by 0.712 m.What is the charge on each if the force is attractive?
- Q A student stands at the edge of a cliff and throws a stonehorizontally over the edge with a speed of 10.0 m/s. the cliff is50.0 m above a flat horizontal...
- Q A 300 kg piano is being lowered into position by a crane whiletwo people steady it with ropes pulling to the sides. Bob's ropepulls to the left, 11 ∘ below...
- Q 1) Which takes more work, slowing a car from 100km/h to 70km/h,or 70km/h to 0?2) A 0.2kg falcon flies at 50m/s toward a 0.01kg shrew moving at0.2m/s away from the...
- Q what other elements does a star burn as fuel besideshydrogen?
- Q 5) Three capacitors, all initially without any dielectricsinserted, of C1 = 3 micro-farads, C2 = 7 micro-farads, and C3 = 15micro-farads, are connected purely in series to a battery and...
- Q You have two fluids, water and a fluid that has a density thatis 3/10 that of water. If a volume of water that has the same massas7.40 m3of the other...
- Q A 2 kg ball is 60m in the air with the PE of 1176. It has abouncing restitution coefficient of 0.50.Calculate. What is the maximum speed of the ball before...
- Q Two cars collide at an intersection. Car A, with a mass of 1900kg , is going from west to east, while car B , of mass 1500 kg , isgoing...
- Q a) Write down the state equation of an ideal gas. This equationcan be utilized to derive any one of the macroscopic thermodynamicproperties, p1, T1, or V1, of an ideal gas...
- Q A spherical cannonball of mass 2M is launched with an initialvelocity v0 at an angle of 45° above the horizontal. There is anexplosive charge between the two halves of the...
- Q discuss the history of heron's fountain in 100-200 words
- Q Explain Bohr’s Theory of the Hydrogen Atom. When a hydrogenatom does absorbs or emits radiant energy? What kinds of spectrumis created when we observe the emission and absorption of radiantenergy...
- Q *Use Gauss's Law: Q1. Find the electric field (outside andinside) due to a uniformly charged solid sphere of radius “a†andthe total charge Q.Explanation with drawing will be appreciated.
- Q Review A 110 cm3 box contains helium at a pressure of 2.50 atmand a temperature of 120 ∘C. It is placed in thermal contact with a180 cm3 box containing argon...
- Q A sheet of glass is coated with a 501-nm-thick layer of oil(n = 1.42).1.For what visible wavelengths of light do thereflected waves interfere constructively?2.For what visible wavelengths of light do...
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