Discuss how the Hall effect could be used to obtain information on free charge density in a conductor. (Hint: Consider how drift velocity and current are related.)

Q: As shown below, a mass of 10 kg placed on a ramp is in contact with a spring. The spring has a stiff...

A:

Q: There is a vertical electric field, 2.00 × 104N / C in magnitude, on the surface of the Earth on a d...

A: Given: The electric field is E=2×104 NC. The dimension of car is l=6 m. The dimension of car is b=3...

Q: The fllowing Creuit diagram reprerents arevit diagram that is connected to potential diffrence of 12...

A: Solution: Given that V = 12v C1 =2 μFC2 =8 μFC3 =6 μF

Q: A wave along a guitar string has a frequency of 540 Hz and a wave length of 2.5 meters. Calculatecth...

A:

Q: (a) How much gravitational potential energy (relative to the ground on which it is built) is stored ...

A: a) The expression for find gravitational potential energy is PE=mgh Substitute values in the above e...

Q: A taho vendor carries a 1.5 m long light plank over his shoulder. At the ends of the plank are two b...

A: The free-body diagram shows for the given situation,

Q: (a) The density of water at 0oC is very nearly 1000 kg/m3 (it is actually 999.84 kg/m3), whereas the...

A: The density of water is, The density of ice is, The initial atmospheric pressure is, The bulk mod...

Q: By looking Figure, how can we say about velocity change with respect to time for every point (a, b, ...

A: Instantaneous velocity is calculated by finding the slope of the graph at that instant.  Instantaneo...

Q: A 40-W bulb is used for 12.5 hours every day for 30 days. Calculate the consumption of electrical en...

A: Given : Power of a bulb (P) = 40 W Time (t) = 12.5 hours    

Q: Calculate the effective resistance of a pocket calculator that has a 1.35-V battery and through whic...

A: V=Voltage=1.35 VI=Current=0.2 mAR=Resistance

Q: In Figure P37.18, let L = 120 cm and d = 0.250 cm. The slits are illuminated with coherent 600-nm li...

A: Step 1 The average intensity and the maximum intensity are related as below, Here ϕ is the phase di...

Q: Why are the wingspans of birds a consideration in determining the spacing between parallel wires in ...

A: Answer:   When the wingspans of birds are adequate to cross the parallel wires that are having sever...

Q: A t=0, a blade with a 2.25m radius and initially revolving at 5 rad/s starts to decelerate at -0.25 ...

A: (given) Angular velocity, w1=5 rad/sw2=0deceleration,∆α=-0.25 rad/s2time,t1=0 radius is 2.25 m      ...

Q: A force F, of magnitude 7.20 units acts at the origin in a direction 27.0° above the positive x axis...

A: Graphical method Consider the following figure.   Please follow these steps to obtain the required ...

Q: During normal beating, the heart creates a maximum 4.00-mV potential across 0.300 m of a person’s ch...

A: potential, V = 4 mV  distance, r =  0.3 m  frequency, f =1 Hz

Q: (a) Triply charged uranium-235 and uranium-238 ions are being separated in a mass spectrometer. (The...

A: Given: Mass of the uranium- 235 ions = 3.90 x 10-25 Kg Mass of the uranium- 238 ions = 3.95 x 10-25 ...

Q: An engineer designs a roller coaster so that a car travels horizontally for 172 ft, then climbs 147 ...

A: The initial horizontal displacement is, r1=172 ft The distance travelled with 32°above horizontal is...

Q: If a particle has an initial velocity v0 = 12 ft/s to the right, and a constant acceleration of 2 ft...

A: Given data: The initial velocity of a particle towards the right is v0=12 ft/s. The constant accele...

Q: Hunter aims his gun vertically and shoots a 465 g game, which is positioned, on a telephone pole. Th...

A: Given data: The mass of the target game is mt=465 g. The mass of the bullet is mb=60 g. The initial...

Q: A convex mirror is on the exterior of the passenger side of many trucks . If the focal length of suc...

A: Given: The focal length of the mirror is f=-40 cm. The object distance is u=100 m. The object heigh...

Q: A ceramic insulator is baked at 400∘C400∘C and cooled in a room in which the temperature is 25∘C25∘C...

A: Given : Temperature at which ceramic insulator is baked (To)= 400° C Room temperature (Tm) = 25° C t...

Q: A particle is fired vertically upwards and its height, h metres, after any number of seconds, t, is ...

A: Solution:  

Q: Suppose you have a spring (of constant k = 250) and you compress it 10 cm. next to the spring you pl...

A:

Q: An ant starts at the origin (x = 0) and crawls along the x - axis with velocity (in units/sec) given...

A:

Q: A toroidal coil has a mean radius of 16 cm and a cross-sectional area of 0.25 cm2 ; it is wound unif...

A: Given: The mean radius of toroidal coil is r=16 cm. The cross-sectional area is A=0.25 cm2. The num...

Q: 38. Two gas cylinders are identical. One contains the monatomic gasargon (Ar), and the other contain...

A: Given: The volume of both cylinders are the same. The pressure in the cylinders are the same.

Q: The setup shown is used to measure the output of a small turbine. When the flywheel is at rest, the ...

A: The figure shows the free body diagram of the flywheel.

Q: How much energy is stored in the 0.632 mH inductor of the preceding example when a 30.0 A current fl...

A: Inductance, L = 0.632 mH  current, I = 30A 

Q: The total charge that an automobile battery can supply without being recharged is given in terms of ...

A: Given: Total charge q =60 Ah Voltage V=12 V   

Q: 2. (a) State the Gauss's law relating an electric field E and an enclosed charge q. Show that if the...

A: We are authorized to answer one question at a time, since you have not mentioned which question you ...

Q: A system is made up of three bodies with respective velocities as follows: body A of mass 1.5 kg mov...

A: Analyze the figure given below,

Q: Determine s and a when t= 3 s if s=0 when t= 0. v (m/s) t (s) 4 2. 2.

A: The schematic diagram is as shown below:

Q: Determine the x and y scalar components of F= 800 lb 30°

A: F = 800 lb  Angle, A = 30 degree 

Q: A blade with a 0.25 m radius starts from rest and rotates with an accleration of 0.25 rad/s2. what i...

A: Given data The radius of the blade is r = 0.25 m. The acceleration of the α=0.25 rad/s2.     The ang...

Q: What are the wavelengths of the peaks in each color matching curve inFig. 9.18

A: To determine the wavelength of the peak, draw a line perpendicular to the wavelength axis and passin...

Q: A 10-m-long glider with a mass of 680 kg (including the passengers) is gliding horizontally through ...

A: Given, a 10-m-long glider with a mass of m = 680 kg (including the passengers) is gliding horizontal...

Q: (I) Neon signs require 12 kV for their operation. To operatefrom a 240-V line, what must be the rati...

A: The ratio of secondary to primary turns of the transformer can be obtained as NsNp=VsVp=12000V240V=5...

Q: What is translating rigid body?

A: To determine,What is translating rigid body.

Q: Starting from rest, a 4.2-kg block slides 2.20 m down a rough 30.0° incline. The coefficient of kine...

A: Given Data: The mass of  a block is, m=4.2 kg The distance at which box slides is, d=2.20 m The incl...

Q: I need help with number 9

A: Mass of Tarzan is 80 kg. Mass of Jane is 60 kg. The initial speed of Jane is 2 m/s. The initial heig...

Microscopic view of current

In physics, the term current is expressed as the rate of flow of electric charges across the area per unit time (I=q/t). It propagates along in the direction of the motion of positive charges. When the current is caused by the motion of electrons, the direction of the current is opposite to the flow.