3 years ago

Which way is left? which way is left?

Physics

2 answers:

Sedbober [7]3 years ago

3 0

Answer:

left is the left side of your hand when looking in a way

Explanation:

DerKrebs [107]3 years ago

3 0

Answer:

<----------- ------------>

Left Right

Explanation:

hOpE tHiS hElPs

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A mass weight of 120N is hung from two strings. what is the tension?

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4 years ago

In the physics lab, a block of mass M slides down a frictionless incline from a height of 35cm. At the bottom of the incline it

bogdanovich [222]

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Given :

M = 0.35 kg

$m=\frac{M}{2}=0.175 \ kg$

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or $K.E._{top}+P.E._{top} = K.E._{bottom}+P.E._{bottom}$

But $K.E._{top} = 0$ and $P.E._{bottom} = 0$

Therefore, potential energy at the top = kinetic energy at the bottom

$\Rightarrow mgh = \frac{1}{2}mv^2$

$\Rightarrow v = \sqrt{2gh}$

$=\sqrt{2 \times 9.8 \times 0.35}$ (h = 35 cm = 0.35 m)

= 2.62 m/s

It is the velocity of M just before collision of 'm' at the bottom.

We know that in elastic collision velocity after collision is given by :

$v_1=\frac{m_1-m_2}{m_1+m_2}v_1+ \frac{2m_2v_2}{m_1+m_2}$

here, $m_1=M, m_2 = m, v_1 = 2.62 m/s, v_2 = 0$

∴ $$v_1=\frac{0.35-0.175}{0.5250}+\frac{2 \times 0.175 \times 0}{0.525}$

$=\frac{0.175}{0.525}+0$

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3 years ago

The low-frequency speaker of a stereo set has a surface area of 0.06 m2 and produces 2.03 W of acoustical power. What is the int

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Answer:

33.83W/m²

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The intensity of the speake at the surface is

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