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svp [43]
4 years ago
6

The buoyant force works opposite of: 1.weight 2. acceleration 3. mass

Physics
1 answer:
aalyn [17]4 years ago
8 0
The answer to question is number 1.weight
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Here are three pairs of initial and final positions, respectively, along an x-axis. Which pair gives a
Sladkaya [172]

Answer:

(b)-3 m,-7 m

Explanation:

Displacement is a vector quantity that connects the initial position of an object to its final position after a certain motion.

Mathematically, displacement can be written as:

d=x_f - x_i

where

x_f is the final position

x_i is the initial position

The direction of this vector is from the initial position to the final position.

In order to calculate the displacement of an object, therefore, it is necessary to correctly take into account the sign of each motion, which gives the direction of each motion.

Let's analyze the three cases:

(a) -3 m, +5 m;

In this case, the object moves 3 m in the negative direction first, and then 5 meters in the positive direction; so the net displacement is

d = -3 + 5 = +2 m

(b)-3 m,-7 m;

In this case, the object moves 3 m in the negative direction first, and then 3 meters in the negative direction; so the net displacement is

d = -3 - 7 = -10 m

(c) 7 m, -3 m?

In this case, the object moves 7 m in the positive direction first, and then 3 meters in the negative direction; so the net displacement is

d = +7 + (-3) = +4 m

So, the only situation in which we have a net negative displacement is situation b).

6 0
3 years ago
Recall the relationship between the charge on a capacitor and the potential difference across the capacitor. Use this relationsh
charle [14.2K]

Answer:

Answer in explanation.

Explanation:

The relationship between the charge on the capacitor and the potential difference across it is given as follows:

Q = CV

where,

Q = Charge on the Capacitor

C = Capacitance of the Capacitor

V = Potential Difference across the Capacitor

This relationship can be used to find the charge on a capacitor, using the voltmeter, as follows:

<u>The potential difference can be measured through the voltmeter. And the capacitance of the capacitor is a known constant value. Therefore, the charge can be found by taking product of both.</u>

8 0
3 years ago
What type of cars are electric and what kind of battery do they have
Kaylis [27]

lithium-ion battery.

hopefully this helps

3 0
4 years ago
In a simple model of the hydrogen atom, the electron moves in a circular orbit of radius 0.053nm around a stationary proton. par
Alenkasestr [34]
<span>Here the force that is applied between the electron and proton is centripetal, so equate the two forces to determine the velocity.
 We know charge of the electron which for both Q1 and Q2, e = 1.60 x 10^-19 C
 The Coulombs Constant k = 9.0 x 10^9
 Radius r = 0.053 x 10^-9m = 5.3 x 10^-11 m
  Mass of the Electron = 9.11 x 10^-31
  F = k x Q1 x Q2 / r^2 = m x v^2 / r(centripetal force)
  ke^2 / r^2 = m x v^2 / r => v^2 = ke^2 / m x r
 v^2 = ((1.60 x 10^-19)^2 x 9.0 x 10^9) / (9.11 x 10^-31 x 5.3 x 10^-11 )
 v^2 = 4.77 x 10^12 = 2.18 x 10^6 m/s
 Since one orbit is the distance,
  one orbit = circumference = 2 x pi x r; distance s = v x t.
 v x t = 2 x pi x r => t = (2 x 3.14 x 5.3 x 10^-11) / (2.18 x 10^6)
  t = 33.3 x 10^-11 / 2.18 x 10^6 = 15.27 x 10^-17 s
 Revolutions per sec = 1 / t = 1 / 15.27 x 10^-17 = 6.54 x 10^15 Hz</span>
6 0
3 years ago
A sound wave has a wavelength of 0.450 meters. If its speed in cold air is 330 meters/second, what is the wave's frequency?
faust18 [17]
Most of the information's required are already given in the question. Based on those information's the answer can be easily deduced.
Wavelength of the sound wave = 0.450 meters
Speed of the sound wave = 330 meters per second
We already know
v=f<span>λ
</span>330 = f * 0.450
f = 330/0.450
  = 733.33 hertz
So the frequency of the wave is 733.33 hertz
5 0
4 years ago
Read 2 more answers
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