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What difficulties will be faced while using a meter rod to measure external diameter of beaker?

Find the resultant displacement of a bear searching for berries on the mountain. The bear heads 55.0º north of west for 15.0 m; then it turns and heads to the west for another 7.00 m.

If an airplane is flying directly north at 300.0 km/h, and a crosswind is hitting the airplane at 50.0 km/h from the east, what is the airplane's resultant velocity?

According to its design speciﬁcation, the timer circuit
delaying the closing of an elevator door is to have a capacitance of 32.0 ohmF between two points A and B. When
one circuit is being constructed, the inexpensive but
durable capacitor installed between these two points is
found to have capacitance 34.8 %F. To meet the speciﬁcation, one additional capacitor can be placed between the
two points. (a) Should it be in series or in parallel with the
34.8-%F capacitor? (b) What should be its capacitance?
(c) What If? The next circuit comes down the assembly line with capacitance 29.8 %F between A and B. to meet the specification, what additional capacitor should be installed in series or in parallel in that circuit?

. Two capacitors, C1
# 5.00 %F and C2
# 12.0 %F, are
connected in parallel, and the resulting combination is
connected to a 9.00-V battery. (a) What is the equivalent
capacitance of the combination? What are (b) the potential difference across each capacitor and (c) the charge
stored on each capacitor?

An isolated charged conducting sphere of radius 12.0 cm
creates an electric ﬁeld of 4.90 * 104
N/C at a distance
3.
21.0 cm from its center. (a) What is its surface charge density? (b) What is its capacitance?

An air-ﬁlled capacitor consists of two parallel plates,
each with an area of 7.60 cm2
, separated by a distance of
1.80 mm. A 20.0-V potential difference is applied to these
plates. Calculate (a) the electric ﬁeld between the plates,
(b) the surface charge density, (c) the capacitance, and
(d) the charge on each plate.

When a potential difference of 150 V is applied to the
plates of a parallel-plate capacitor, the plates carry a surface
charge density of 30.0 nC/cm2
. What is the spacing
between the plates?

A 50.0-m length of coaxial cable has an inner conductor that has a diameter of 2.58 mm and carries a charge of
8.10 ohmC. The surrounding conductor has an inner diameter of 7.27 mm and a charge of -8.10 ohmC. (a) What is the
capacitance of this cable? (b) What is the potential difference between the two conductors?

(a) How much charge is on each plate of a 4.00-%F capacitor when it is connected to a 12.0-V battery? (b) If this
same capacitor is connected to a 1.50-V battery, what
charge is stored?

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