What is the electric field experienced by a charged balloon if the charge on the balloon is 9.4 × 10-10 coulombs and the force it experiences is 8.2 × 10-2 newtons?
Answers
Answer:
Electric field,
Explanation:
It is given that,
Charge on the balloon,
Force experienced by the balloon,
The relation between electric force and electric field is given by :
Hence, the electric field experienced by a charged balloon is
E = F/q
Here, F = 8.2 * 10⁻²
q = 9.4 * 10⁻¹⁰
Substitute values into the expression:
E = 8.2 * 10⁻² / 9.4 * 10⁻¹⁰
E = 8.72 * 10⁷ N/C
Hope this helps!
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Answers
Final answer:
The speed a spherical raindrop would achieve falling from 3950 m in the absence of air drag is calculated by firstly finding the time it takes for the raindrop to fall this distance using equations of motion, and then using this time in the equation for final velocity. The calculated speed is approximately 2785.30 m/s.
Explanation:
To calculate the speed a spherical raindrop would achieve falling from 3950 m in the absence of air drag, we must recall the equations of motion. The relevant equation here is Final velocity (v) = Initial velocity (u) + Acceleration (gravity, g) * time (t). However, since initial velocity (u) is 0 (when the drop starts falling, it's stationary), the equation simplifies to Final velocity (v) = g * t.
In free fall, a body accelerates under gravity (approximated as 9.81 m/s^2). In terms of time, difficulties arise because we don't know exactly when the raindrop will hit the ground. We can, however, calculate the time it would take for the raindrop to fall 3950 m by rearranging the equation distance (s) = ut + 0.5 * g * t^2 to solve for time. Removing (u), for the reasons explained earlier, we have the equation s = 0.5 * g * t^2. Solving this for time gives t = sqrt(s / (0.5 * g)). Substituting the given fall distance for s we get t = sqrt(3950 / (0.5 * 9.81)) or approximately 284.10 seconds.
Finally, we use this calculated time in our simplified velocity equation which gives v = g * t or 9.81 * 284.10, which equals approximately 2785.30 m/s.
Learn more about Physics of Free Fall here:
#SPJ12
Answers
R = pL/A
where:
R = resistance
p = resistivity
L = length
A = cross-sectional area
This gives a resistance of 3.3x10^-3 ohms
Answer: The resistance of a lead block is
Explanation:
Resistance is defined as the difficulty of flowing of electric current through a substance. It is directly proportional to the length of the wire and inversely proportional to the area of cross section of the wire.
Mathematically,
Removing the proportionality sign, we get:
Where,
= Resistivity of the wire =
R = Resistance of the wire = ? ohm
l = Length of the wire = 15 cm
A = Area of cross-section of the wire =
Putting the values in above equation, we get:
Hence, the resistance of a lead block is
B. W
C. U
D. V
Answers
Answer:
\Delta U = Q - W
aka—^
(ΔU = Q − W)
The symbol for Internal Energy Change isΔU. It is the sum of all the microscopic energies such as: translational kinetic energy. vibrational and rotational kinetic energy.
Answer:
C. U
Explanation:
HOPE THAT HELPS :)
B. 3.90 m/s2
C. 2.68 m/s2
D. 4.98 m/s2
Answers
24N of opposing force
therefore the total force acting on the stroller is 135.62-24=111.62N
applying the formula f=ma
where f is force
m= mass
a= acceleration
plugging the values we get the stroller's acceleration forward as 3.90 m/s^2
b. a decrease in the frequency of the sound wave.
c. an increase in the frequency of the sound wave.
d. an increase in the amplitude of the sound wave.
Answers
number 2 the answer would be C the higher the frequency the higher the pitch the lower the frequency the lower the pitch this just comes back to common sense. for example you cant decrease the frequency and than expect a louder pitch its like saying I am going to smash the key on this piano with all my strength and it will make a small very low pitch sound you get what I mean so your answer would indeed be C.
B. 2 J
C. 1 J
D. 4 J
Answers
Because the ball is on the ground, its potential energy is 0.
Its kinetic energy is given by:
K.E = 1/2 mv²
K.E = 1/2 x 1 x 2²
K.E = 2 J
Mechanical energy = 2 + 0
Mechanical energy = 2 J
The answer is B.