R y -a-

Q: A cubical block of wood, 10.0 cm on a slide, floats at the interface between oil and water with its ...

A: Given: Density of the oil is 0.79 g/cm3. Block is floating at a distance of 1.50 cm below the interf...

Q: 103. In a discussion person A is talking 1.5 dB louder than person B, andperson C is talking 2.7 dB ...

A: The intensity of sound can be expressed as β=10logII0      1

Q: A freshly prepared sample of a certain radioactive isotope has an activity of 3.7 × 1011 decays/s. A...

A: Relation between activity of the radioactive isotope and half life R=R0e-tT1/2-tT1/2=lnRR0T1/2=-tlnR...

Q: A body projected upward from the level ground at an angle of 37° with the horizontal has an initial ...

A: Projectile motion is the motion undergone by an object thrown , at an angle respect to the horizonta...

Q: A battery charger meant for a series connection of ten nickel-cadmium batteries (total emf of 12.5 V...

A: input voltage, Vp= 120 V  output voltage, Vs = 15 V  Number of turns in primary, Np  = 200 

Q: 1a) A pound of body fat stores an amount of chemical energy equivalent to 3500 Cal. When sleeping, t...

A: 1 pound of body weight burns 0.45 Cal/h. Therefore a person with body weight 151 lb(151 pound) burns...

Q: A 2.4 kg breadbox on a frictionless incline of angle 6 - 36 * is connected, by a cord that runs over...

A:

Q: A sample of ozone (O3) is stored at x kelvin and 12.5 Pa. If the temperature is doubled to 2x kelvin...

A:

Q: What is the difference between mechanical wave and Electromagnetic wave. Also why does the mechanica...

A: Mechanical waves are a type of wave that transfer energy through medium by oscillating medium partic...

Q: What happens if you change the direction of the current in a wire?

A: The current-carrying wire always produces magnetic fields throughout it. The direction of the magnet...

Q: (III) A long copper strip 1.8 cm wide and 1.0 mm thick isplaced in a 1.2-T magnetic field as in Fig....

A: Given,

Q: A car radio draws 0.23 A of current in the auto's 12-V electrical system. (a) How much electric powe...

A: Given data The current drawn by the car radio is: I = 0.23 A The potential difference in the electri...

Q: can you show me how to do it \?

A: According to Newton's Equation of motion,  v2=u2+2as......(1) where, The final velocity of the objec...

Q: 1. A pottery wheel with a radius of 30cm rotates at 3.5 rpm. (a) What is the speed, in rad/s of a po...

A: Given data The radius of the wheel is r = 30 cm. The rotation of the pottery wheel is N = 3.5 rpm.  ...

Q: The power cable for an electric trolley (Fig. 20-63) carries a horizontal current of 330 A toward th...

A: In this case, the power cable carries a horizontal current towards the east. The magnetic field has ...

Q: A free neutron (m=1.67 x 10-27 kg )has a mean lifeof 880 s. What is the uncertainty in its mass (in ...

A: Given, Mass of neutron, m=1.67×10-27 kg, and mean life time, t=880 s.

Q: PH 121 Quiz #10 As you walk, your body moves up and down. If you are wearing a backpack, the motion ...

A: Hi. Since you have posted a question with multiple subparts and not specified which subparts you wan...

Q: A solenoid 50 cm long is wound with 500 turns of wire. The cross-sectional area of the coil is 2.0 c...

A: The expression for the self inductance of solenoid, L=μ0N2Al                 (I)               N=num...

Q: A railroad car of mass M moving at a speed v1 collides and couples with two coupled railroad cars, e...

A: As par your given condition, you required the solution of part (b) only.

Q: What is the maximum magnitude of the force on an aluminum rod with a 0.100-μC charge that you pass b...

A: The magnitude of magnetic force is, F=qvBsinθ          (I)                q=charge,v=velocity,B=magn...

Q: A body is projected from the ground at an angle of 32° with the horizontal at an initial speed of 13...

A: The vertical component of the initial speed u can be determined as,

Q: According to the manual of a certain car, a maximum torque of magnitude 57.0 Nm should be applied wh...

A: The magnitude of the torque is given by, τ=rFsinθ Here, r is the radius , F is the magnitude of the ...

Q: The wheels , axle, and handles of a wheel-barrow weigh 117 N (W). What is the force F needed to hold...

A: For the system to be in equilibrium, net torque acting on it must be zero. In case of zero net torqu...

Q: (a) How much energy is necessary to heat 5.5 kg of water from room temperature (20°C) to its boiling...

A: Given : Mass of water (m) = 5.5 kg Room temperature (To) = 20°C Cost of energy = 41¢ per kWh

Q: If electrical energy costs $0.12 per kilowatt-hour, how much do the following events cost? (a) To bu...

A: The energy consumed is, E=PtE=80.0 W24 hE=1920 Wh1 kWh1000 Wh=1.92 kWh

Q: A large block is being pushed against a smaller block such that the smaller block remains elevated w...

A: Given data: Mass of the small block is, m= 0.70 kg The small block need to have small acceleration i...

Q: As shown in the diagram below, a baseball is thrown with an original speed of 50.0 m/s and at an ang...

A: Hello. Since your question has multiple sub-parts, we will solve the first three sub-parts (a, b, an...

Q: If a centrifuge pushes the astronauts to 5g's with a radius of 10m, (i) what is the angular velocity...

A: Acceleration = 5 g = 5 * 9.8 = 49 m/s2 Radius (R) = 10 m I) Using formula for centripetal accelerati...

Q: The figure below shows a spaceprobe and five planets (A, B, C, D, and E). The motion of the spacepro...

A:

Q: If the maximum force the biceps muscle can exert is 1000 N, can we pick up an object that weighs 100...

A: Limbs are third class levers, with the mechanical advantage less than one. The applied force (Effort...

Q: An object has two million more electrons than protons. What is the net charge of the object?

A: Let the number of protons be n.Np=n The number of electrons is Ne=n+2 million=n+2×106 Total number p...

Q: (a) If 585 J of heat are added to 49 moles of a monatomic gas at constant volume, how much does the ...

A: Heat, H = 585 J  number of moles, n = 49  Cv =3/2 R  CR = 5/2 R

Q: An objectis placed 6cm from a convex mirror with a radius of curvature of 24 cm. The image is: a. re...

A: Given data *The radius of the curvature is R = 24 cm *An object is placed from the convex mirror is ...

Q: A 556-kg trailer is hitched to a truck. Find the work done by the truck on the trailer in each of th...

A: Given data The mass of the trailer is: m =556 kg The road is inclined at an angle is: θ = 14.2° The ...

Q: Write the necessary equation of the object shown in figure below. F. R, R. Take the origin of the to...

A: Sign convention for horizontal forces: The force pointed in the rightward direction is positive and ...

Q: A container with rigid walls holds n moles of a monatomic ideal gas. In terms of n, how many moles o...

A: Given: The removal of the number of moles on doubling the pressure in the container.  

Q: Many of the elements in horizontal-bar exercises can be modeled by representing the gymnast by four ...

A: Write the formula for the x-components of the center of gravity of the gymnast.

Q: In one cycle, a heat engine takes in 1160 J of heat from a high-temperature reservoir and releases 6...

A: A heat engine is a thermodynamic-engine based on the second law of thermodynamics. The heat engine c...

Q: 63. ssm A Carnot air conditioner maintains the temperature in a house at 297 K on a day when the tem...

A: Given: The inside temperature is 297 K. The outside temperature is 311 K.

Q: As a wave passes by an offshore piling, the height of the water is modeled by the function h(t) = 3...

A: The height of the water is modelled by the function, ht=3 cosπ5t   Using the cosine curve, y=a cos k...

Electric Charges and Fields

One of the fundamental properties is the electromagnetic property. Charge cannot be destroyed by any process and this contributes formally to the law of charge conservation.