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1 year ago

a particle moves at a constant speed in a circular path. the instantaneous velocity and instantaneous acceleration vectors are:

1 answer:

8 0

The instantaneous velocity always tangential to circular path and instantaneous acceleration always points towards the center of circle.

What is instantaneous?

The definition of instantaneous velocity is the rate of change of location during a time that is virtually zero .The replica was. The definition of instantaneous velocity is the speed of a moving item at a certain instant in time.

The rate of change of location during a relatively brief period of time is known as instantaneous velocity.

In the limit when the time (and thus the displacement) between the two places approaches zero, the instantaneous acceleration is the average acceleration between two points on the route.

so, both of them are perpendicular to each other.

To learn about instantaneous velocity

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Hydrogen is a gas at room temperature, but diamond is a solid with a high melting point.

mezya [45]

Answer:

Each carbon atom is covalently bonded to four other carbon atoms in diamond. A lot of energy is needed to separate the atoms. This is because covalent bonds are strong. This is the reason why diamond has a high melting point.

Explanation:

hey man here is your answer hope it helps

3 0

4 years ago

A physical pendulum consists of a meter stick that is pivoted at a small hole drilled through the stick a distance x from the 50

Rom4ik [11]

Answer:

x=0.01457 m

Explanation:

From parallel axis theorem

I=Icm+mh²

where h=x

The rotational inertia about its center of mass is

Icm=mL²/12

where L=1.0 m

Thus T=4.8s we obtain

$T=2\pi \sqrt{\frac{mL^{2}/12+mx^{2} }{mgx} }\\ T=2\pi \sqrt{\frac{L^{2} }{12gx}+x/g }\\ T^{2}=4\pi^{2}(\frac{L^{2} }{12gx}+x/g )/x\\ T^{2}x=\frac{\pi^{2} L^{2} }{3g}+(\frac{4\pi^{2} }{g})x^{2}\\ 0=(\frac{4\pi^{2} }{g} )x^{2}-(T^{2} )x+(\frac{\pi^{2}L^{2} }{3g} )\\ 4.03x^{2}-23.04x+0.335=0$

After Solving this quadratic we get

x₁=5.702 m

x₂=0.01457 m

One of the solution is an impossible value for x (x=5.70m is greater than L)

So we choose the other one

x=0.01457 m

3 0

4 years ago

1. State Newton's third law of motion and write any three applications of it

Scrat [10]

Answer:

1)When a bullet is fired from the gun with a certain force (action) as a reaction an equal and opposite force is exerted on the gun. 2)when you jump, your legs apply a force to the ground, and the ground applies and equal and opposite reaction force that propels you into the air.

4 0

3 years ago

Read 2 more answers

Boyle's Law states that as the pressure on a gas increases at constant temperature the volume of the gas

elena55 [62]

Boyle’s law is P1V1 = P2V2. This shows that pressure and volume have an inverse relationship, so increase in pressure causes a decrease in volume. B is your answer

4 0

3 years ago

An air-filled pipe is found to have successive harmonics at 980 Hz , 1260 Hz , and 1540 Hz . It is unknown whether harmonics bel

zmey [24]

Answer:

L = 0.7 m

Explanation:

This is a resonance exercise, in this case the air-filled pipe is open at both ends, therefore we have bellies at these points.

λ / 2 = L 1st harmonic

λ = L 2nd harmonic

λ = 2L / 3 3rd harmonic

λ = 2L / n n -th harmonic

the speed of sound is related to wavelength and frequencies

v =λ f

f = v /λ

we substitute

f = v n / 2L

the speed of sound in air is v = 343 m / s

suppose that the frequency of f = 980Hz occurs in harmonic n

f₁ = v n / 2L

f₂ = v (n + 1) / 2L

f₃ = v (n + 2) / 2L

we substitute the values

2 980/343 = n / L

2 1260/343 = (n + 1) / L

2 1540/343 = (n + 2) / L

we have three equations, let's use the first two

5.714 = n / L

7.347 = (n + 1) / L

we solve for L and match the expressions

n / 5,714 = (n + 1) / 7,347

7,347 n = 5,714 (n + 1)

n (7,347 -5,714) = 5,714

n = 5,714 / 1,633

n = 3.5

as the number n must be integers n = 4 we substitute in the first equation

L = n / 5,714

L = 0.7 m

3 0

4 years ago