Answer:
Explanation:
capacitance of air capacitor C = charge / volt
C = 6.39 x 10⁻⁵ / 2.67
= 2.39 x 10⁻⁵ Farad
After inserting dielectric between plates , the capacitance of capacitor becomes C₁ where
C₁ = 6.03 x 2.39 x 10⁻⁵
= 14.41 x 10⁻⁵ Farad
The voltage of the capacitor will remain the same as earlier that is 2.67 V because it remains connected with the charging source .
New charge on the capacitor = new capacitance x voltage
= 14.41 x 10⁻⁵ x 2.67
= 38.47 x 10⁻⁵ C .
The useful equations here are derived equations for rectilinear motion at constant acceleration:
a = (v - v₀)/t
2ax = v² - v₀²
x = v₀t + 0.5at²
1. Since it starts from rest, v₀ = 0. Then, v = <span>10.5 m/s and t=1.35 s
a = (10.5 - 0)/1.35 = 7.78 m/s</span>²
a = 7.78 m/s²*(1 km/1000 m)*(3,600 s/ 1 h)² = 100,828.8 km/h²
2. v₀ = 0; v = 60 km/h; t=5.4 s
a = [60 km/h*(1000 m/1km)*(1 h/3600 s) - 0]/5.4 s = 3.09 m/s²
3. Using the acceleration and velocities in #2, we can determine the distance by the formula: 2ax = v² - v₀²
2(3.09 m/s²)x = [60 km/h*(1000 m/1km)*(1 h/3600 s)]² - (0 m/s)²
Solving for x,
x = 44.95 m
4. Using acceleration in #2 and v₀ = 0, the time would be
x = v₀t + 0.5at²
0.25 km * 1,000 m/1 km = (0)(t) + (0.5)(3.09 m/s²)(t²)
Solving for t,
t = 12.72 seconds
5. Acceleration of automobile:
a = [(55 km/h - 25 km/h)*(1,000 m/1 km)*(1 h/3,600 s)]/30 s
a = 0.278 m/s²
<span>
</span>Acceleration of bicycle:
a = [(30 km/h - 0 km/h)*(1,000 m/1 km)*(1 h/3,600 s)]/(0.5 min * 60 s/1 min)
a = 0.278 m/s²
<span>
6. x = 85 km or 85,000 m; v</span>₀ = 0 m/s; v = 2,800 m/s
2ax = v² - v₀²
2a(85,000 m) = (2,800 m/s)² - 0²
a = 46.12 m/s²
7. Using the data given and acceleration in #6,
x = v₀t + 0.5at²
85,000 m = 0*t + 0.5(46.12 m/s²)(t²)
Solving for t,
t = 60.71 seconds
Masa is a concept that identifies that magnitude of a physical nature that allows indicating the amount of matter in a body. Within the International System , its unit is the kilogram ( kg . )
There is a square loop of wire with side length L moving to the right at a speed of v. The resistance in the wire is R. To the right of it is a region with a magnetic field with field strength B into the page. of anxiety (low vs. high) and stress (low vs. moderate vs. high) on test.
Everyone experiences anxiety occasionally, but persistent anxiety can reduce your quality of life. Though likely best known for altering behavior, worry can have negative effects on our physical health. Anxiety speeds up our heartbeat and breathing, resistance blood flow to the parts of our brains that need it. You are getting ready for a challenging situation by having this extremely bodily reaction. Test performance may be impacted by anxiety. According to studies, pupils with low levels of test anxiety perform better on multiple-choice resistance (MCQ) exams than pupils with high levels of anxiety. Studies have indicated that female students have greater levels of test anxiety than male students.
Learn more about anxiety here:
brainly.com/question/4913240
#SPJ4
<span><span>The answer is A.
</span><span>Chlorine is found in group7A of the periodic table. This means that when they are neutral, (electrons and protons are equal), they lack 1 electron to complete the octet or eight valence electrons to be stable. This will result in Chlorine having to gain an electron. Since it gained an electron, that means the electrons outnumber the protons by 1, which will result in a negative charge of -1. </span></span>