We need the statements to answer the question
Answer:
resistance- decreases current-increases
Answer:
Find The area and calculate pressure.
Explanation:
The best answer is b - span.
A span is the distance between two bridge supports The supports may be towers, columns, or even the wall of a canyon.
There are many kinds of bridges but they all fall into three types namely beam, arch and suspension. The major difference between these three kinds of bridges is the distance that each can cross in a single span.
For example, a modern beam bridge is likely to span a distance of 200 feet, a modern arch can span 800 or 1000feet, and a modern suspension bridge can span up to 7000ft.
Taking into account the definition of calorimetry, the mass of the coffee is 253.33 g.
<h3>Calorimetry</h3>
Calorimetry is the measurement and calculation of the amounts of heat exchanged by a body or a system.
Sensible heat is defined as the amount of heat that a body absorbs or releases without any changes in its physical state (phase change).
So, the equation that allows to calculate heat exchanges is:
Q = c× m× ΔT
where:
- Q is the heat exchanged by a body of mass m.
- c is the specific heat sudstance.
- ΔT is the temperature variation.
<h3>Mass of coffee</h3>
In this case, you know:
- Q= 190 calories
- c= 1
- m= ?
- ΔT= 0.75 C
Replacing in the equation that allows to calculate heat exchanges is:
190 cal = 1 × m× 0.75 C
Solving:
m= 190 cal÷ (1 × 0.75 C)
<u><em>m=253.33 g</em></u>
Finally, the mass of the coffee is 253.33 g.
Learn more about calorimetry:
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