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Anvisha [2.4K]
3 years ago
10

1. Balanced forces acting on an

Physics
2 answers:
zzz [600]3 years ago
8 0

Answer: 1. A

2. B

Explanation:

1. As long as The force is equally distributed the object will not move .

2. If the force in one side is greater than that of the other the object will move

SVETLANKA909090 [29]3 years ago
3 0

Answer:

1. A

2. B

Explanation:

1. As long as The force is equally distributed the object will not move .

2. If the force in one side is greater than that of the other the object will move

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What is the de Broglie wavelength of an object with a mass of 2.50 kg moving at a speed of 2.70 m/s? (Useful constant: h = 6.63×
xxMikexx [17]

Answer:

9.82 × 10^{-35} Hz

Explanation:

De Broglie equation is used to determine the wavelength of a particle (e.g electron) in motion. It is given as:

λ = \frac{h}{mv}

where: λ is the required wavelength of the moving electron, h is the Planck's constant, m is the mass of the particle, v is its speed.

Given that: h = 6.63 ×10^{-34} Js, m = 2.50 kg, v = 2.70 m/s, the wavelength, λ, can be determined as follows;

λ = \frac{h}{mv}

  = \frac{6.63*10^{-34} }{2.5*2.7}

 = \frac{6.63 * 10^{-34} }{6.75}

 = 9.8222 × 10^{-35}

The wavelength of the object is 9.82 × 10^{-35} Hz.

4 0
3 years ago
After landing on an unfamiliar planet, a space explorer constructs a simple pendulum of length 53.0 cm . The explorer finds that
larisa86 [58]

Answer:

12.4 m/s²

Explanation:

L = length of the simple pendulum = 53 cm = 0.53 m

n = Number of full swing cycles = 99.0

t = Total time taken = 128 s

T = Time period of the pendulum

g = magnitude of gravitational acceleration on the planet

Time period of the pendulum is given as

T = \frac{t}{n}

T = \frac{128}{99}

T = 1.3 sec

Time period of the pendulum is also given as

T = 2\pi \sqrt{\frac{L}{g}}

1.3 = 2(3.14) \sqrt{\frac{0.53}{g}}

g = 12.4 m/s²

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3 years ago
How much heat in joules is required to heat a 50 g sample of aluminum from 71 ∘f to 142 ∘f?
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Semiconductors are materials that conduct electric current better than insulators but not as well as conductors.Semiconductors a
Lina20 [59]
Yes ! it is absolutely true.
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Juanita made an electromagnet by placing an iron bar inside a coil of wire and then running current through the wire. After awhi
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