3 years ago

How could you increase the kinetic energy of a wagon without increasing it's mass

Physics

2 answers:

vampirchik [111]3 years ago

7 0

By increasing height you can do that

Zarrin [17]3 years ago

3 0

Answer:

send the wagon down a higher hill

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H o m o zygous what does it mean

lord [1]

Answer:

two identical

Explanation:

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Answer:

mass

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3 years ago

A charge Q is transferred from an initially uncharged plastic ball to an identical ball 17 cm away. The force of attraction is t

Alecsey [184]

Answer:

2.92 x 10¹² electrons

Explanation:

given,

distance between two plastic ball, r = 17 cm

r = 0.17 m

Force of attraction = F = 68 mN

F = 0.068 N

number of electron transferred from one ball to another.

using Coulomb Force equation

$F = \dfrac{kq^2}{r^2}$

$0.068 = \dfrac{9\times 10^9\times q^2}{0.17^2}$

q² = 2.1835 x 10⁻¹³

q = 4.67 x 10⁻⁷ C

now, number of electron

$N = \dfrac{q}{e}$

e is the charge of electron which is equal to 1.6 x 10⁻¹⁹ C

$N = \dfrac{4.67\times 10^{-7}}{1.6\times 10^{-19}}$

N = 2.92 x 10¹² electrons

electrons were transferred from one ball to the other is 2.92 x 10¹²

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3 years ago

If a 1.3 kg mass stretches a spring 4 cm, how much will a 5.8 kg mass stretch the

Likurg_2 [28]

Answer:

17.8cm

Explanation:

1.3kg --> 4cm

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3 years ago

The blade of a windshield wiper moves through an angle of 180.0 degrees in 0.500 s. The tip of the blade moves on the arc of a c

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Answer:

Centripetal acceleration will be equal to $10.66m/sec^2$

Explanation:

We have given time taken to cover 180° is 0.5 sec

So time taken by 360° is equal to = 2×0.5 = 1 sec

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So velocity $v=\frac{distance}{time}=\frac{.2656}{1}=3.2656m/sec$

We have to find the centripetal acceleration

Centripetal acceleration will be equal to $a_c=\frac{v^2}{r}=\frac{3.2656^2}{1}=10.66m/sec^2$

So centripetal acceleration will be equal to $10.66m/sec^2$

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4 years ago