While taking photographs in Death Valley on a day when the temperature is 62.0

Expert Solution

Resistance at 20 deg c = Ro

Resistance at 62 deg c, R1 = Ro [ 1 + ? ?t ]

= Ro [ 1 + ? ( 62 - 20 ) ]

= Ro [ 1 + 42 ? ]

Resistance at - 88 deg c, R2 = Ro [ 1 + ? ( - 88 - 20 ) ]

= Ro [ 1 - 108 ? ]

According to ohms law, I ? ( 1 / R )

I2 / I1 = R1 / R2

I2 / I1 = ( 1 + 42 ? ) / ( 1 - 108 ? )

I2 / I1 = ( 1 + 42 * 0.0039 ) / ( 1 - 108 * 0.0039 )

I2 / I1 = 1.1638 / 0.5788

I2 = 1.3 * ( 1.1638 / 0.5788 )

= 2.61 A

genius_generous answered 4 months ago

While taking photographs in Death Valley on a day when the temperature is 50.0°C, Bill Hiker...

While taking photographs in Death Valley on a day when the temperature is 50.0°C, Bill Hiker finds that a certain voltage applied to a iron wire produces a current of 1.000 A. Bill then travels to Antarctica and applies the same voltage to the same wire. What current does he register there if the temperature is -88.0°C? Assume that no change occurs in the wire's shape and size.

What is the temperature on a spring day when the resistance is 216.0 Ω?

A carbon resistor is to be used as a thermometer. On a winter day when the temperature is 4.00 C, the resistance of the carbon resistor is 217.3 Ω. What is the temperature on a spring day when the resistance is 216.0 Ω? Take the temperature coefficient of resistivity for carbon to be α = −5.00×10−4 C-1.

An outside-air sample is taken on a day when the temperature is 78 F and the...

An outside-air sample is taken on a day when the temperature is 78 F and the relative humidity is 40%. (a) Use the psychrometric chart to state as many physical properties of the air as you can without doing any calculations. For each one, provide a brief description of the property listed. (b) A thermometer is mounted on the back porch of your house. What temperature would it read for the air described in this problem? (c) A sample of...

The temperature on a winter day is 23℉. (a) What is this temperature in ℃? (b)...

The temperature on a winter day is 23℉. (a) What is this temperature in ℃? (b) In K? In general, materials will expand with increasing temperature. What is an important everyday exception to this rule? Does it really help to run hot water over a tight metal lid on a glass jar before trying to open it? Explain. A steel rod has a length of 2.5 m. It is then heated by 44C°. What is its new length? A rectangular...

One day GB reports to you for exercise and when taking his resting blood pressure and...

One day GB reports to you for exercise and when taking his resting blood pressure and pulse note his blood pressure is 118/64, his pulse rate is 150 and highly irregular. GB indicates he has felt very weak and tired lately almost didn’t show up to exercise. You refer him to his physician who obtains an ECG and determines he has atrial fibrillation. What physiological mechanisms caused GB’s pulse rate to be high and irregular and his blood pressure low? What specifically,...

How hot does it get in Death Valley? The following data are taken from a study...

How hot does it get in Death Valley? The following data are taken from a study conducted by the National Park System, of which Death Valley is a unit. The ground temperatures (°F) were taken from May to November in the vicinity of Furnace Creek. Compute the mean, median, and mode for these ground temperatures. (Enter your answers to one decimal place.) 144 152 167 176 187 182 183 187 182 167 182 164 152 142

One day while walking in the park, you observe a squirrel munching on an acorn, when...

One day while walking in the park, you observe a squirrel munching on an acorn, when suddenly a hawk comes and grabs and eats the squirrel. What is the squirrel in this situation? A. Predator B. Primary consumer C. Prey D. Secondary consumer E. Both B and C F. Both A and D ------------------------- You have formulated a hypothesis: "Pineapples contain more vitamin C than oranges." To test this hypothesis you measure vitamin C levels in 20 oranges and 20...

When would you use standard precautions over sterile precautions while taking care of your patient and...

When would you use standard precautions over sterile precautions while taking care of your patient and why?

What is the temperature on the winter day? On a warm summer day (33 ∘C), it...

What is the temperature on the winter day? On a warm summer day (33 ∘C), it takes 4.70 s for an echo to return from a cliff across a lake. On a winter day, it takes 5.10 s . The speed of sound in air is v≈(331+0.60T)m/s, where T is the temperature in ∘C.

List and explain at least three assumptionsthat are generally considered when using vertical photographs to derive...

List and explain at least three assumptionsthat are generally considered when using vertical photographs to derive geometric information of the object space.

Question