### What must be the length of this wire

Assignment Help Physics
##### Reference no: EM13539323

Suppose you wish to fabricate a uniform wire from 1.80 g of copper. The wire is to have a resistance of R = 0.380 ? and all the copper is to be used.

(a) What must be the length of this wire?
........... m

(b) What must be the diameter of this wire?

### Previous Q& A

#### Consider a fixed observation point within the conductor

Suppose the current in a conductor decreases exponentially with time according to the equation I(t) = I0e-t/?, where I0 is the initial current (at t = 0), and ? is a constant having dimensions of time. Consider a fixed observation point within the..

#### Pipeline expand due to the difference in temperature

The Trans-Alaskan pipeline is 1300 km long, reaching from Prudhoe Bay to the port of Valdez, and is subject to temperatures ranging from -73°C to +35°C. How much does the steel (average coefficent of linear expansion 11 x 10-6 (°C)-1) pipeline expand..

#### Find the current that flows through the battery

A circuit consists of a 12.0-V battery connected to three resistors (44ohm , 17ohm and 110ohm ) in series. Find the current that flows through the battery.

#### What is the linear speed vt of mercury

Mercury has a mass MP = 3.18 x 1023 kg, an orbital period T = 88.0 days, and an orbital radius r = 5.79 x 1010 m. Assume the orbit of Mercury around the Sun is approximately circular.

#### Laser beam-incident and reflected beams

A laser beam is reflected by a plane mirror. It is observed that the angle between the incident and reflected beams is 24 degrees. If the mirror is now rotated so that the angle of incidence increases by 6.0 degrees, what is the new angle between the..

#### The density of free electrons in gold

The density of free electrons in gold is 5.90 × 1028 m-3. The resistivity of gold is at a temperature of 20°C and the temperature coefficient of resistivity is A gold wire, 1.1 mm in diameter and 29 cm long, carries a current of 650 mA. The drift ..

#### The energy now stored by the capacitor

A parallel-plate capacitor has a capacitance of 10 mF and charged with a 20 V power supply. The power supply is then removed and a dielectric of dielectric constant 4 is used to fill the space between the plates. The energy now stored by the capac..

#### What is the magnification of the image on the film

A lens for a 35-mm camera has a focal length given by f= 49mm. A How close to the film should the lens be placed to form a sharp image of an object that is 5.3mm away?

#### A concave lens has a focal length

A concave lens has a focal length of -33 cm. Find the image distance and magnification that results when an object is placed 21cm in front of the lens.

#### Find the angular speed of mercury about the sun

Mercury has a mass MP = 3.18 x 1023 kg, an orbital period T = 88.0 days, and an orbital radius r = 5.79 x 1010 m. Assume the orbit of Mercury around the Sun is approximately circular. Find the angular speed of Mercury about the Sun.

### Similar Q& A

#### Find out temperature at a height of 10,000 feet

If 3.43×10^8 electrons flow through the ground wire to Earth and the ground wire is then removed, what is the net charge on the electroscope.

#### What is the tension in each rope

Two blocks are placed in contact on a horizontal frictionless surface. The smaller box has less mass than the larger box. A force F is applied to the small box as shown so that the boxes accelerate to the right.

#### Calculate the magnitude of the electric force

A particle has a charge of +1.7 %u03BCC and moves from point A to point B, a distance of 0.29 m. Find the magnitude of the electric force that acts on the particle

#### Estimate the coefficient of kinetic friction

A 2-kg box is initially sliding at a speed of 15 m/s on a horizontal surface. What is the coefficient of kinetic friction between the box and the horizontal surface

#### What is the peak value of the magnetic field strength

If the electric field in an EM wave has a peak value of 0.45X10^-4 V/m, what is the peak value of the magnetic field strength

#### Find the apparent frequency of each whistle

A man walks at 3 m/s on a still day along the line between two fire stations. Find the apparent frequency of each whistle

#### What is the intensity of the laser beam

A laser emits a narrow beam of light. The radius of the beam is 1.0 mm, and the power is 2.8 mW. What is the intensity of the laser beam

#### Continuous string with appropriate boundary conditions

$$\sum_{}^{}A_{n}sin(nk_{1}z); n = 1, 3, 5.....$$ Formula 1 Formula 2 Prove the following two statements using a method that makes use of the normal modes of a continuous string with appropriate boundary conditions, and is equivalent to the the Fo..

#### Determine at what speed is the rider moving

To withstand "g-forces" of up to 10 g's, caused by suddenly pulling out of a steep dive, fighter jet pilots train on a "human centrifuge." at what speed is the rider moving when she experiences 10 g's

#### Find the rate at which work is done by you

You exert a force as shown in the diagram to push a large crate of books (about 1 m high, m = 45.0 kg) across a rough floor at constant speed v = 0.650 m/s. Find the rate at which work is done by you

#### Find the value of k

A positive charge q1 = 2.50 µC on a frictionless horizontal surface is attached to a spring of force constant k, the distance between charges to d = 9.00 cm, Find the value of k

#### Calculate the change in exergy of the contents

A constant-pressure insulated piston-cylinder device contains 1.7 kg of saturated liquid-vapor mixture of water at 150 kPa with an initial quality of 0.2. Calculate the change in exergy of the contents in kJ