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nordsb [41]
3 years ago
15

On the planet Xenos, an astronaut observes that a 1.00 m long pendulum has a period of 1.50 s. What is the

Physics
1 answer:
Tanya [424]3 years ago
4 0

Answer:

g=1.77π2xm/s2

Explanation:

T

=

2

π

√

l

g

∴

√

l

g

=

T

2

π

∴

l

g

=

T

2

4

π

2

∴

g

l

=

4

π

2

T

2

∴

g

=

4

π

2

l

T

2

g

=

4

π

2

×

1.00

1.50

2

=

1.77

π

2

x

m/s

2

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A boy rubs two balloons against his sweater. One balloon acquires a charge of 3.0 E -6 C. The other balloon acquires a charge of
KonstantinChe [14]

Answer:

F= 67.5 N

Explanation:

We use the equation for the Coulomb's Law of Force between two charges Q1 and Q2 (in Coulombs) separated by a distance d (in meters):

F=k\frac{Q1*Q2}{d^2}

where the constant k is the Coulomb's constant (9*10^9 N\frac{m^2}{C^2}

The charges are Q1=3.0*10^{-6}C, Q2=2.5*10^{-7}C; the distance we convert into meters to match the appropriate units of the Coulomb constant k (1 cm = 0.01 m)

Now we input all these data into the equation, knowing that given the appropriate units, the force will be expressed in Newtons (N):

F=k\frac{Q1*Q2}{d^2}\\F=9*10^9\frac{3.0*10^{-6}*2.5*10^{-7}}{0.01^2} N\\F= 67.5N

4 0
3 years ago
If you know that the period of a pendulum is 1.87 seconds, what is the length of that pendulum? (Assume that we are on Earth and
shepuryov [24]

Period of an ideal simple pendulum  =  2π √(L / G)

                                          1.87 = 2π √ (L / 9.81)

Divide each side by  2π :      (1.87 / 2π) = √ (L / 9.81)

Square each side:                (1.87 / 2π)²  =  L / 9.81

Multiply each side by  9.81 :      L = (9.81) (1.87 / 2π)²  = <em> 0.869 meter</em>

                                              Choice 'D' is the closest one.


8 0
3 years ago
Read 2 more answers
Calculate the speed (in m/s) of an electron and a proton with a kinetic energy of 1.85 electron volt (eV). (The electron and pro
Natali5045456 [20]

Answer:

ve = 8.06 x 10^5 m/s

vp = 1.882 x 10^4 m/s

Explanation:

K = 1.85 eV = 1.85 x 1.6 x 10^-19 J = 2.96 x 10^-19 J

me = 9.11 ✕ 10^-31 kg,

mp = 1.67 ✕ 10^-27 kg

Let the speed of electron is ve and the proton is vp.

For electron :

K = 1/2 me x ve^2

2.96 x 10^-19 = 0.5 x 9.11 x 10^-31 x ve^2

ve^2 = 6.498 x 10^11

ve = 8.06 x 10^5 m/s

For proton:

K = 1/2 mp x vp^2

2.96 x 10^-19 = 0.5 x 1.67 x 10^-27 x vp^2

vp^2 = 3.5449 x 10^8

vp = 1.882 x 10^4 m/s

6 0
3 years ago
What is the radius of a circle thats the diameter of 480?
Luda [366]
The answer is 12.36. hoped this helped!
4 0
3 years ago
Hii! help asap. i’ll give brainliest thanks!
o-na [289]

I believe it’s the mass of the box but I don’t no if I’m right

Hope this helped
5 0
3 years ago
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