What is the velocity of Jupiter if an object on the equator of Jupiter would travel approximately 280,000 miles in about 10 hours?
Q: A car racing at 100 ft/sec brakes to a complete stop in 12 seconds. Its velocity is recorded every 2...
A: First, part has been solved (a) Given: The car is racing at 10 ftsec. Introduction: Acceleration is ...
Q: 32. The masses of the objects with positions r1 = 10j (cm), r2 = 16i (cm) and r3 = 2i + 4j (cm) on t...
A: Given: The mass of the first object m1 = 0.5 kg. The mass of the second object m2 = 1 kg. The mass ...
Q: What must the emf E inFig. be in order for the currentthrough the 7.00 Ω resistor to be 1.80 A?Each ...
A: ...
Q: Assertion: When a body moves along a circular path, no work is done by the centripetal force. Reason...
A: Option c
Q: The magnetic moment of Fe2+ ion is ________
A: We know, that magnetic moment = √n(n+2), where n is the number of unpaired electrons. In Fe2+ ion, n...
Q: The meterstick shown is 100 cm long. It is free to pivot around its center of gravity (CG), which is...
A: Given The meterstick shown is 100 cm long. It is free to pivot around its center of gravity (CG), wh...
Q: derive the equation of Brewster's law of polarization by reflection
A: Brewster's law describe the phenomena of polarization of an unpolarized light which when incident on...
Q: Challenge Question: How do sea breeze and land breeze occur?
A: The air over the ocean is now warmer than the air over the land. The land loses heat quickly after t...
Q: A player throws a ball upwards with an initial speed of 29.4m/s. What is the direction of accelerati...
A: Given: The initial speed of the ball u = 29.4 m/s.
Q: NOTE: This is a multi-part question. Once an answer is submitted, you will be unable to return to th...
A: Vertical motion: y0=1.5 mνy0=0y=y0+νy0t-12gt2t=2y0-ygAt point B y=htB=2y0-hgwhen h=854 mmtB=21.5-0.8...
Q: When a moving bus suddenly stops, a person sitting ___________ a) Stands up b) Falls forward c) Fall...
A: Option b is correct
Q: While launching a rocket of mass 2×104 kg, a force of 5×105 N is applied for 20s. Calculate the velo...
A: Option c
Q: How is friction due to air reduced? a) Streamlining b) Lubrication c) By using ball bearings d) By p...
A: Streamlining
Q: A dam holds back the water in a lake. If the dam has a small hole, 1.4 metersbelow the surface of th...
A: Given Hole height = 1.4 meters
Q: Let us assume that a resistor connected across terminals a and b in the following circuit draws a cu...
A: Given: The current drawn by the resistor between a and b is 5 A. The voltage drop across the 20 Ω re...
Q: A person is falling from a certain height. Which of the following is likely to happen? a) If he fall...
A: Option
Q: 6. In a regular FCC, determine number of atoms per unit area in (1 1 0) plane
A: 6. Given: A regular FCC crystal plane is (1, 1, 0). To find : Atoms number per unit area. As per r...
Q: The density of silver is 10.5 g/cm3 and its atomic weight is 108. If each atom contributes one elect...
A: Option d
Q: F= 500 N 5 m 4 m
A: Here we need to find the moment of force acting about point A, The is acting at point B and the line...
Q: A generation station of 6 kw has a load factor of 0.7 and plant capacity factor of 0.8. The plant ha...
A: Option b is correct
Q: At high temperatures, which material is the best choice to be used as coolant in a nuclear reactor? ...
A: C
Q: A stone tied to the end of string 80cm long is whirled in horizontal circle with a constant speed. I...
A: Option d correct
Q: Maxwell-Boltzmann law is for the ________ a) Distinguishable particles b) Indistinguishable Particle...
A: Option a
Q: A body executing uniform circular motion has at any instant is velocity vector and acceleration vect...
A: Answer:- Option (d) correct.
Q: How much water a pump of 2kW can raise in one minute to a height of 10m? (g=10m/s2) a) 1000litres b)...
A: P = W/t=mgh/t m = Pt/gh=(2000×60)/(10×10)=1200kg.
Q: Raman effect is scattering of ________ a) Atoms b) Molecules c) Protons d) Photons
A: Option c protons
Q: Which of the following stays in equilibrium even after being slightly displaced? a) Stable equilibri...
A: The correct option is A. Stable Equilibrium.
Q: The total path length is always equal to the magnitude of the displacement vector of a particle. a) ...
A: False
Q: Which of the following is the property of Newton’s third law? a) A body moving with a uniform speed ...
A: The forces of action and reaction cannot cancel each other. This is because of action and reaction, ...
Q: what is work done
A: We know that work done is defined as the multiplication of magnitude of displacement d and the compo...
Q: When the earth’s sun would die, it would change into a ____________ a) Supernova b) Nebula c) White ...
A: Our sun is a medium-mass star in the universe. Thus, when it would die, it would swell up into a red...
Q: Summerfield theory
A: According to Sommerfeld, the stationary orbits in which electrons are revolving around the nucleus i...
Q: What is the magnitude of a unit vector?
A: Unity
Q: A hammer is resting on a plane surface. If force P is applied on the hammer along with a line not pa...
A: D option
Q: During Bose-Einstein condensation all the atoms fall back to the _______ a) Ground state b) First ex...
A: Option a
Q: If a star is about 10 times the earth’s sun, how will it change when it’s about to die? a) Explode b...
A: Option d is correct answer
Q: 4. DETAILS PREVIOUS ANSWERS SERESSEN1 2.P.009. MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER A person t...
A: The constant speed of the person is given as, v = 91 km/h The average speed of person is given as, v...
Q: What is EM Radiation by your own words?
A: EM Radiation- The vibrations created between electric field and magnetic field is called electromag...
Q: how doppler effect has helped some professionals like (1) doctors and (2) astronomers in their fiel...
A: Doppler shift or Doppler effect is defined as the change in frequency of sound wave due to a reflect...
Q: Which of the following kinetic friction is smaller? a) Limiting friction b) Static friction c) Rolli...
A: Option c
Q: The elastic scattering of photons is called as ______ a) Atmospheric scattering b) Rayleigh Scatteri...
A: Option b is correct
Q: A cyclist moves along a circular path of radius 70m. If he completes one round in 11s, calculate the...
A: Option b
Q: In massive stars, when the core has fused carbon into every possible matter, the iron core shrinks f...
A: True
Q: Heisenberg uncertainty principle
A: In quantum mechanics, the uncertainty principle is any of a variety of mathematical inequalities ass...
Q: Calculate the energy released by the fission of 5 gm of 235U in kWh if energy released per fission i...
A: Now, Number of atoms in 5 g of 235U = 6.023 X 1023 X 5/235 Energy released by the fission = 6.023 X ...
Q: a. Draw a diagram showing the moment arm and the force b. What is the value of the moment arm? write...
A: Given information: The force applied, F=5.0×105 N The angle made by the point of contact of the forc...
Q: In a hydraulic press the columns have diameters of 40cm and 5m. If we apply a force of 500N to each ...
A: In hydraulic system pressure is same on both the columns. Pressure = force/area
Q: An aeroplane flying horizontally with a speed of 360km/h releases a bomb at a height of 490m from th...
A: Option c
Q: While firing a bullet, the gun should be ___________ a) Held away from the shoulder b) Held tight to...
A: B
Q: A thick spherical shell carries charge density k 2 (a b. Plot |E| as a function of r, for the case ...
A: Given, A thick spherical shell carries charge density; ρ=kr2 (a≤r≤b) To find out the electric fie...
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