Ex. 63 : A ballet dancer spins about vertical axis at 90 r.p.m. with arms outstretched. With the arms folded, the momentum of inertia about the same axis change by 25%. Calculate the new frequency of revolution.
Q: The 30-N force P is applied perpendicular to the portion BC of the bent bar. Determine the moment of...
A: Given that,The length of both the bars : L = 1.6 (m)One bar is inclined at angle above the other bar...
Q: A 120 V ac voltage source is connected across a 2.0 micro-F capacitor. What will be the current to t...
A: Given that,AC Voltage : V = 120 (V)Frequency of voltage source : f = 60 (Hz)Voltage of capacitor : C...
Q: In an RC series circuit, emf = 12.0 V, resistance R= 1.21 MQ, and capacitance C= 1.87 µF. Find the m...
A: Given that,Capacitance : C = 1.87 (μF)Resistnace : R = 1.21 (M Ohm)EMF : E = 12 (V)Here we need to f...
Q: Measuring blood sugar using the electronic glucose meter, will include: Analysis of emerged light ph...
A: Given Measuring blood sugar using the electronic glucose meter, will include, as following below.
Q: POSITION, TIME, DISTANCE. .... Multiple 7. Setting the man as the reference point, which of the foll...
A: “Since you have asked multiple question, we will solve the first question for you. If you want any s...
Q: 99 : The minimum angular separation between two stars is 4 x 10° rad, if telescope is used to observ...
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Q: A telescope is used to resolved two stars. Separated by 5.2 x 10-6 radian. If the wavelength of ligh...
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Q: 3. What is your observation of the change in each parameter? Circle the correct answer. a. Resistanc...
A: Resistance is a measure of the opposition to current flow in an electrical circuit. resistance is me...
Q: F = 550N 160 mm 240 mm 440 mm y 380 540 mm mm
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Q: X-rays of wavelength å =1.5 x 10 m, are reflected by the (221) plane. Calculate Bragg angle from the...
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Q: Advanced Physics Question
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Q: : S.H.M. of ampli
A: Amplitude = A = 10 cm kinetic energy as, Here, Potential energy as,
Q: An iron anchor of density 7860.00 kg/m appears 231 N lighter in water than in air. (a) What is the v...
A: Suppose the Volume of the achor be 'V' Let the density of anchor be ρ so the weight of the anchor w...
Q: An airplane indicates a pressure of 95 kPa at takeoff, where the airport elevation is 1 km and the t...
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Q: A cube of marble having each side of length 5 m is kept in an electrostatic field of intensity 300 V...
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Q: 22. Once fired, a bullet accelerates at 6.8 x 104 m/s2 through a rifle barrel. If the barrel is 0.8 ...
A: Lenght of the barrel s=0.8 m acceleration of bullet a=6.8×104 m/s2 From the kinematic equation of mo...
Q: A charge i is distributed inside a sphere of radius a with density pi(r) that varies with distance r...
A: Let both points charge centered at the center of the sphere. If the charge density ρr is constant fo...
Q: In part (a) of the figure an electron is shot directly away from a uniformly charged plastic sheet, ...
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Q: Problem 5: A spherical, insulating shell with uniform charge density p(r) = -p is centered at the or...
A: Solution: (a). The electric field due to the spherical shell can be found using Gauss law. Draw a Ga...
Q: 1 The quickest way to lose weight is to put yourself in free fall. In the thrill ride shown, the rid...
A: Solution: 1(A). The value of the centripetal acceleration given is equal to the acceleration due to ...
Q: A charged capacitor consisting of two parallel plates has an area and separate of 0.500 m^2 and 9.00...
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Q: Part (a) What is the position vector, Rtarget, that originates from the balloon's original position ...
A: Solution: 5. (a). The coordinate of the initial position of the balloon is at a height of h from the...
Q: Q. 50 : The total energy of a particle, execut SHM is: Proportional to x2. Proportional to x Proport...
A: The total energy of a particle executing SHM is always a constant (ignoring damping). If the amplitu...
Q: Problem 1: A uniform line of charge with total charge Q runs along the y-axis from -t/2 to +/2. What...
A: Electric field is the force per unit charge at the respective location. To calculate the electric fi...
Q: a. What
A: S.H.M of total energy particle as, The kinetic energy position as,
Q: The heat produeed by a l00 W heatu in 2 minutes is ?
A: Given:power P = 100 wtime t = 2 minutestime t = 2 x 60 = 120 sec
Q: One student uses a meter-stick to measure the thickness of a textbook and obtains 4.3 cm t 0.1 cm. O...
A: For the first student who made the measurement of the thickness of the textbook with a meter stick, ...
Q: The building slab is subjected to four parallel column loadings. Take F1=4 kN , and F2=5 kN Determi...
A: Given, Downward forces are, F1=-4kNF2=-5kNFA=-6kNFB=-12kN {*negative sign because all are in the dow...
Q: doees all the oblique componennts of force F are considered to be essential in resolving forces?
A: Answer: The oblique component of the Force makes an angle with respect to some reference direction, ...
Q: The charge density on the surface of a conducting sphere is 128 x 10-' C/m² and the electric intensi...
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Q: Q3: Determine the x- and y- coordinates of the centroid of the shaded aera. 50 mm 40 30 mm mm 40 mm ...
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Q: Determine the minimum coefficient of friction at point B required for a person to use the ladder. As...
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Q: D B This force diagram represents a box being pushed to the left across the floor. Force A is Force ...
A: This is a free body diagram, where A,B,C and D represents the external forces acting on the box. Ac...
Q: Rank the speeds of the lettered locations. The fastest should be ranked 1, the next fastest 2, etc. ...
A: The total energy of the system will be constant. TE=KE+PE=constant KE= kinetic energy PE=Potential ...
Q: radius which when stretched by a force of 2 kg. modulus for a wire 2 m long and 0.5 mm in Ex. 1: Det...
A: To find-(1) Stress(2) Strain(3) Young's modulusGiven-L=2 mr=0.5 mm=5×10-4 mF=mgF=2×9.8N
Q: 5At t = 0 s, a particle is at position x = -2 m. Its velocity for t > 0 is shown in the graph below....
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Q: Problem 1:A uniform line of charge with total charge Q runs along the y-axcis from -t/2 to +/2. What...
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Q: Average Speed (m/s) Position (m) 32. Use Xfinal = Xinitial + vt to determine the position of the obj...
A: Given: The position of the object is given by xfinal=xinital+vt Time Average Speed (s) (m/s) ...
Q: A proton is moving in a uniform magnetic field as depicted below.
A: A proton is moving in a uniform magnetic field B. Charge on the proton=q Force acting on the protonF...
Q: At a given instant of time a rigid rotor is in a state Y(0.¢)=- sin 9 sin o 47 a) What possible valu...
A: Here we have a simple question related to spherical harmonics. !st task is that we have to convert i...
Q: An arcratt at an altitude of 8km vwhere the temperature is 32 C". Find the mach number and dlassify ...
A: The aircraft is at an altitude of, h=8 km The temperature is given as, T=32 oC The speed of the airc...
Q: Briefly explain the working of a semiconductor laser.
A: A semiconductor laser works on a similar principle to that of an LED. Simply, it is a p-n junction t...
Q: Two point charges, +Q and -Q are arranged on the x-axis at the coordinates (-a, 0) and (a, 0) as sho...
A: The potential at a point due to a system of charges is given by V=∑i=1NkQiri where k=14πε0Qi=charge...
Q: A uniformly charged spherical droplet of mercury has electric potential Vbig throughout the droplet....
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Q: Ex. 66: Calculate the velocity of sound in a gas of wavelength in which two waves 2 m and 2.05 m pro...
A: To find- Velocity of sound in gas=? Given- λ1=2 mλ2=2.05 mn1-n2=4 beats/sec
Q: Calculate norton's current,norton resistance and current through RL
A: According to Nortons theorem, any simple linear circuit can be reduced to a circuit consisting of a ...
Q: An electron accelerates horizontally from rest in a uniform 100 N/C electric field along they-axis. ...
A: The electron is placed in an electric field, which imparts a force on the electron in the horizontal...
Q: How much work does a supermarket check out attendant do on a can of soup he pushes 0.790M horizontal...
A: In this case, the attendant in a supermarket pushes a can of soup horizontally some certain distance...
Q: In a laboratory test of tolerance for high acceleration, a pilot is swung in a circle 11.0 m in diam...
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Q: The mass per area of a certain type of floor tiling is O.01 g/cm2 (grams per centimeter-squared). Wh...
A: Given, Mass per area = 0.01 gcm2 Now 1 kg = 1000 g 1 g = 0.001 kg and 1 m = 100 cm 1 ...
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