Physics question and answers for September 10, 2023
- Q A proton and a singly charged ion of mass 91 atomic mass units(amu) are accelerated through the same potentialdifference and enter a region of uniform magnetic field movingperpendicular to the...
- Q Is it possible, in principle, for you to travel to thecenter of the galaxy, which is 23,000ly away in your lifetime?Explain, using both time dilation and length contraction arguments.If your...
- Q What is the difference between beats and echoes?
- Q The smallest known blackhole is XTE J1650-500 in a binary systemin the Milky Way. It’s mass is with just 3.8 times the mass of thesun. On the other hand, the...
- Q Could you measure the Earth's magnetic field (magnitude anddirection) using the magnetic field sensor? If so, How? If not, whynot?
- Q On a trip, you get stuck in slow traffic and have to drive 90.0km at 30.0 km/hr. Then the traffic clears up, and you're able todrive another 90.0 km at...
- Q A 16-cm-long, zero-resistance slide wire moves outward, onzero-resistance rails, at a steady speed of 11 m/sm/s in a 0.14 Tmagnetic field. On the opposite side, a 1.0 Ω carbon resistorcompletes...
- Q A point charge q1q1q_1 = 4.35 nCnC is located on thex-axis at xxx = 2.10 mm , and a second point chargeq2q2q_2 = -6.25 nCnC is on the y-axis at...
- Q The emitting antenna of a 100-kW radio station radiates equallyin all directions.Part AWhat is the magnitude Emax 600 m from the antenna?Express your answer to two significant digits and include...
- Q Using the definition of magnitude: m=-2.5log F + C derive therelation for the distance modulus: m-M=5logd-5
- Q How much energy is required to change a 44.0-g ice cube from iceat -11.0
- Q Two large, flat metal plates are parallel to each other, adistance d apart. A charge of Q is placed on them and then they areelectrically isolated. As a result, at...
- Q A light bulb is 3.00m3.00m from a wall. You are to use a concavemirror to project an image of the bulb on the wall, with the image2.252.25 times the size...
- Q 1a) Without a commutator, an electric motor wouldA) not move at allB) go too fast and burn outC) not allow current to flow through itD) go back and forth instead...
- Q The acceleration of a bus is given by a(t) = at, where a=1.2m/s^3.a) If the bus's velocity at time t = 1.0s is 5.0m/s, what is itsvelocity at time t...
- Q Two identical point charges (q = +5.80 x 10-6 C) are fixed atopposite corners of a square whose sides have a length of 0.320 m.A test charge (q0 = -7.90...
- Q Given 2 objects moving at some velocity v relative to oneanother, is it possible to determine whether they are moving orwhether the space between them is expanding?
- Q A small block with mass 0.0475 kg slides in a vertical circle ofradius 0.600 m on the inside of a circular track. During one of therevolutions of the block, when...
- Q A circular loop of radius 1.79 m is mounted on top of a truck.Initially the truck is at rest oriented so that a vector normal tothe loop points north. At...
- Q A 20.0-g object is placed against the free end of a spring (withspring constant k equal to 25.0 N/m) that is compressed 10.0 cm.Once released, the object slides 1.25 m...
- Q An electric fan is turned off, and its angular velocitydecreases uniformly from 460 rev/min to 210 rev/min in a timeinterval of length 4.15 s . a)Find the angular acceleration inrev/s2....
- Q list the advantage and shortcoming of bottom-up and top-downmethods
- Q A 3500-pF air-gap capacitor is connected to a25-V battery. If a piece of mica is placed between the plates, howmuch charge will flow from the battery?
- Q On a trip, you get stuck in slow traffic and have to drive 90.0km at 30.0 km/hr. Then the traffic clears up, and you're able todrive another 90.0 km at...
- Q A car is parked on a cliff overlooking the ocean on an inclinethat makes an angle of 25.0° below the horizontal. The negligentdriver leaves the car in neutral, and the...
- Q please answer and show your work, thank you!1.) A farsighted person has a near point that is 48.0 cm fromher eyes. She wears eyeglasses that are designed to enable her...
- Q Wecan easily hear the Doppler shift of a car passing by but we do notnotice the Doppler shift of light from its headlamps. Why isthat?
- Q A closed and elevated vertical cylindrical tankwith diameter 2.00mcontains water to a depth of0.900m. A worker accidently pokes a circular hole withdiameter 0.0190min the bottom of the tank. As the...
- Q Q1Five capacitors are connected across a potential difference Vabas shown in Figure. Because of the dielectrics used, each capacitorwill break down if the potential across it is V=61 V. What...
- Q Q.1 Differentiate between single crystal andpolycrystalline.Q.2 What do you mean by symmetry? Explain mirrorsymmetry
- Q a) What is the difference between Beam-Width and First NullBeam-Width?b) A 70% efficient antenna is having a radiation resistance (Rr)and loss resistance (RL). Calculate the ratio between (Rr) and(RL).c) Calculate...
- Q In each of the following situations, Emma is in the exact centerof a glass-sided freight car speeding to the right at a very highspeed v relative to you. For each...
- Q A 2 kg block is dragged up a hill at an acceleration of 1.8. Ifthe hill is inclined at 30 and the coefficient of friction is 0.1what force must be...
- Q A 100 kg ball has a force acting on it. This force is: F(t)=.4ti -.7tjwhen t = 0 seconds then x = 0 metersinitial velocity: v = 3i - 2jQuestion:...
- Q explain clearly the kind of reasoning involved in decidingwhat might be the rate-controlling step in a chemicalreaction
- Q A metal cylinder of mass ? = 5 kg with a coaxial hole is slidinghorizontally on a metal rod. A spring with spring constant ? = 500N/m is attached to...
- Q 3. Solve for frictional force in part A andthe net force in Part B . Write your final answersfor parts A and B rounded to 3 significant digits.a. A 2.14...
- Q Understanding Physics - Problem 3)Part 1) The figure is a section of a conducting rod of radiusR1 = 1.40 mm and length L = 14.40 minside a thin-walled coaxial conducting...
- Q Your neighbor is pushing a 44.0-kg bag of dirty laundry across aparking lot as shown in the figure below. The coefficient of staticfriction between the bag and the asphalt is...
- Q A kid in a car is holding a helium balloon. the dadslams on the brakes. what does the kid see the helium balloondo?a. stay where it is?b. move forward?c. move...
- Q Two stars, A & B, have same color. This impliesthata. Both stars emit same amount of light.b. Both stars located at equal distance from the earth.c. Both stars has the...
- Q Please explain and give an example:Planar Trigonometry, Right trianges, laws of sine andcosine.Please type answer do not hand write. Thankyou
- Q 1.a) What is the (average) power needed to accelerate a car ofmass m=1550 kg from zero to 60 mph in 7.1 s?b) Which simplifications did you make in that short...
- Q How much energy is required to change a 35-g ice cube from iceat ?15°C to steam at 115°C?
- Q what is bigamy? what deviance theories apply to bigamy
- Q An RLC series circuit has a 1.00 kΩ resistor, a 160 mHinductor, and a 25.0 nF capacitor.(a)Find the circuit's impedance (in Ω) at 490 Hz.Ω(b)Find the circuit's impedance (in Ω)...
- Q A metal sphere hangs from a string and has 2 kg of mass. Thesphere has a charge of +5.5
- Q A spherical raindrop 2.7 mm in diameter falls through avertical distance of 5000 m. Take the cross-sectional area of araindrop = πr2, drag coefficient =0.45, density of water to be...
- Q Quantum computing / Chapter 9 - Deutsch-josza algorithm :\"Suppose that f (00) = f (01) = 0, f (10)= f (11) = 1. Apply theDeutsch-Josza algorithm and show that at...
- Q A converging lens with a focal length of 4.0cm is to the left ofa second identical lens. When a feather is placed 11cm to the leftof the first lens, the...
- Q How can we keep a penny standing on its edge in a stablemanner? ExplainDoes it depend on balancing to find it's center ofmass....
- Q A block of wood of mass 10.8 kg and density 4.42 x 102 kg/m3,floats on water. (a) What is the minimum amount of aluminum(density 2.70 x 103 kg/m3) that can...
- Q Light from a source is incident on a slit of diameter0.84 nm on a screen which is at a distance of 1.8 m. The positionof the first minimum is 1.35...
- Q Meteorologists measure the pressure inside a category 5hurricane to be 0.97 atm very close to the ground (sea level). Whatis the wind speed of the hurricane? You can assume that...
- Q In other problems and examples in the textbook we found theeffective spring stiffness corresponding to the interatomic forcefor aluminum and lead. Let's assume for the moment that, veryroughly, other atoms...
- Q 1. A child is drinking a liquid with a straw. Which of thefollowing statements is true? Why?a. Longer Straws work better because the pressure is largerdeeper down.b. The pressure inside...
- Q Solve the homogeneous differential eqation (1) for the radiocircuit. Show that these terms will dissipate quickly, leaving onlythe particular solution.The equation is a second-order differential equation with L=1/30henrys, R=100 ohms...
- Q A mass of 5 kg is placed on a horizontal surface with acoefficient of kinetic friction of 0.4. A force is appliedvertically downward to it and another force of 81...
- Q An electron with velocity v = 2.0x106 m/s directed along +yaxis enters in a region of uniform electricfield, E = 8.0 x 103 V/m directed along +y axis. What is...
- Q A circuit is consisted of an inductor L, a capacitor C, and aresistor R. It is driven by an AC voltage of the form ?0sin (??).At the steady state, find...
- Q 26.A toy cannon uses a spring to project a 5.34 g soft rubber ball.The spring is originally compressed by 5.08 cm and has a forceconstant of 8.09 N/m. When the...
- Q In a Young's double-slit experiment, a set of parallel slitswith a separation of 0.102 mm is illuminated by light having awavelength of 600 nm and the interference pattern observed on...
- Q A horizontally projected beam of protons travels at 55 km/s intothe space between two horizontal, parallel plates. The plates areseparated by 7.4 cm, and they are 12 cm long. There...
- Q The function of a wave for a wave over a tense rope isy(x,t)=(0.350m)sin (10πt -3πx + π/4)Where \"x\" is in meters and \"t\" in seconds. determineA) Amplitud of the waveB)...
- Q Ice cubes at 0 c are poured into a glass that contains 150 g ofliquid water at 20 c. The contents of the glass are gently stirredand after short time...
- Q 6. Solve parts a and b: A box is at rest on a horizontal,frictionless table.a. Horizontal force F1 points alongthe positive x-axis; when it is the only force acting onthe...
- Q A wheel free to rotate about its axis that is not frictionlessis initially at rest. A constant external torque of +53 N·m isapplied to the wheel for 21 s, giving...
- Q A cylinder of height 10 cm and cross sectional area of 1cm2 is submerged inside two immiscible liquids ofspecific gravity 1.1 and 1.0 respectively.The cylinder is in equilibrium in such...
- Q A large 5-m long Tiger Shark caught off the coast of Florida wasfound to weigh 15000 N (on the boat). Its humongous liver wasremoved and found to weigh 3500 N!...
- Q Describe how to map magnetic field lines?
- Q An electron with an initial speed of 5.05x10^5 m/s is brought torest by an electric field. The charge of an electron is-1.60x10^-19C and its mass is 9.11x 10^-31 kg.a) did...
- Q Two stationary positive point charges, charge 1 of magnitude3.45 nC and charge 2 of magnitude 1.50 nC are separated by adistance of 35.0 cm. An electron is released from rest...
- Q A piston contains 620 moles of an ideal monatomic gas thatinitally has a pressure of 2.92 × 105 Pa and a volume of 4.1 m3.The piston is connected to a...
- Q A 2100 kg truck is driving south through anintersection at 40 mph when it crashes into a1200 kg car that was driving east through theintersection at 55 mph. The two...
- Q A 3.00-kg block of copper at 15.0°C is dropped into a largevessel of liquid nitrogen at 77.3 K. How many kilograms of nitrogenboil away by the time the copper reaches...
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