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2 years ago

What theory did dalton propose about the structure of matter

Physics

2 answers:

Irina-Kira [14]2 years ago

8 0

Dalton’s atomic theory proposed that all matter was composed of atoms

posledela2 years ago

4 0

Answer:

atomic

Explanation:

Dalton's atomic theory proposed that all matter was composed of atoms, indivisible and indestructible building blocks.

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Define upthrust simply (don't copy)

EleoNora [17]

Upthrust is the force that is pushing you up. Kinda to stop you from sinking right into the Earth. Upthrust is simply any force that is causing something to be pushed upwards. Kinda like the opposite of gravity, which is pulling you down =]

Hope this helps ❤️

3 0

2 years ago

Light passes through a diffraction grating with a slit spacing of 0.001 mm. A viewing screen is 100 cm behind the grating.

svp [43]

Answer:

The distance from the center of the interference pattern will the first-order maximum appear is 50.38 cm.

Explanation:

Given that,

Slit space= 0.001 mm

Distance = 100 cm

Wavelength = 450 nm

We need to calculate the angle

Using formula for diffraction maxima

For first order,

$d\sin\theta=m\lambda$

$\theta=\sin^{-1}(\dfrac{\lambda}{d})$

Put the value into the formula

$\theta=\sin^{-1}(\dfrac{450\times10^{-9}}{0.001\times10^{-3}})$

$\theta=26.74^{\circ}$

We need to calculate the distance from the center of the interference pattern will the first-order maximum appear

Using formula of distance

$y=D\tan\theta$

Put the value into the formula

$y=100\tan26.74$

$y=50.38\ cm$

Hence, The distance from the center of the interference pattern will the first-order maximum appear is 50.38 cm.

3 0

2 years ago

What is the term for the force exerted on an object by another object?

abruzzese [7]

i think it D but am not real sure pls don't hate me

3 0

3 years ago

What is the role of a commutator in an electric generator

Verdich [7]

Answer:

The role of a commutator in a electric generator is a rotary switch (in certain types of electrical generators that periodically reverse the current direction between the rotor and the external circuit by that reversing it in the current direction teb rotating windings all half turn a force called torque is produced)

6 0

2 years ago

Suppose you are pushing on a crate across a floor as shown below. Assume the friction force is 47.0 N. How much time will it tak

Mandarinka [93]

Answer:

6.2 seconds

Explanation:

Using Newton's second law, ∑F=ma, we know the net force acting on the object is Force applied-Force of friction. The net force is 203 N. Newton's second law requires the mass of an object, not the weight force, so we will have to calculate the mass. We know that m*g=weight force, in this case, solve for the mass and you will get 210 kg. Now that we have the value of the net force and the mass, we can solve for acceleration. $\frac{F}{m}=a$ =0.967 m/s^2. Now, since we have the acceleration, initial velocity(0 m/s), and the final velocity (6m/s) we will use these to solve for time using the kinematic equation Vf=Vi + at. Plug in the values we know and solve for time and you will get 6.2 seconds

6 0

2 years ago