3 years ago

A published hypothesis:

Physics

1 answer:

kow [346]3 years ago

4 0

Answer:

should be tested by the scientific community

You might be interested in

What two characteristics do electromagnetic waves vary in?

rosijanka [135]

They size of the wave and the time of a certain wave.

4 0

3 years ago

Read 2 more answers

I WILL MARK YOU THE BRAINLIEST NO LINKS

statuscvo [17]

Answer:

it becomes a gas

Explanation:

the matter expands, turning into steam, a gas.

4 0

3 years ago

Which is the BEST description of how eyeglasses work?

Sonbull [250]

Answer:

C I think.

Explanation:

3 0

4 years ago

A train is moving with a velocity of 70 km/h. If north is taken as the positive direction, what is the direction of movement of

Anna11 [10]

Answer:

+70 km/h north

Explanation:

4 0

3 years ago

A uniform ladder 5.0 m long rests against a frictionless, vertical wall with its lower end 3.0 m from the wall. The ladder weigh

DiKsa [7]

Answer:(a)360N,(b)171N,(c)2.702m

Explanation:

(a)Maximum Friction Force = $\mu \left ( N\right )=0.4\times \left ( 740+160\right )$

=360 N

$cos\theta =\frac{3}{5}$

$sin\theta =\frac{4}{5}$

(b)Moment about Ground Point

$740\times 1\times cos\theta +2.5\times 160\times cos\theta -N_15sin\theta$

$N_1tan\theta =1140$

$N_1=171 N$

$N_1=f=171 N$

(c)

$740\times x\times cos\theta +2.5\times 160\times cos\theta -N_15sin\theta$

Here maximum friction force can be 360 N

Therefore $N_1=360 N$

Where x is the maximum distance moved by man along the ladder

$360\times 5\times \frac{4}{3}=740x+160\times 2.5$

740x=2000

x=2.702m

5 0

3 years ago