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2 years ago

What is the main cause of twice-daily tides around the world? Help me.

Physics

1 answer:

liraira [26]2 years ago

4 0

The main cause of twice-daily tides around the world are;

Gravitational pull of the moon

Tides are the rise and fall of water caused by gravitational forces of the moon and sun on the oceans of the earth.

The moons gravity is large enough to actually pull water out of the ocean from space. Just enough to create motion of the tides.

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What does the potential energy and kinetic energy of an object depend on ?

alexdok [17]

Answer:

Both, potential energy and kinetic energy depends on mass. The higher the mass, the higher the energy. However, the difference is that potential energy depends on vertical height whereas kinetic energy depends on the velocity.

Explanation:

From the formula we can see that;

Potential Energy = mass* gravitational acceleration *vertical height.

Kinetic Energy = 0.5 * mass * (velocity)^2

4 0

2 years ago

Light does not pass through some materials. What do you think happens

Hatshy [7]

Answer:

When an electron is hit by a photon of light, it absorbs the quanta of energy the photon was carrying and moves to a higher energy state. One way of thinking about this higher energy state is to imagine that the electron is now moving faster, (it has just been "hit" by a rapidly moving photon)

A photon is a quantum of EM radiation. Its energy is given by E = hf and is related to the frequency f and wavelength λ of the radiation by. E=hf=hcλ(energy of a photon) E = h f = h c λ (energy of a photon) , where E is the energy of a single photon and c is the speed of light.

7 0

1 year ago

The angular velocity (in rpm) of the blade of a blender is given in. If θ=0rad at t=0s, what is the blade's angular position at

Liula [17]

Answer:

θ = 20.9 rad

Explanation:

In a blender after a short period of acceleration the blade is kept at a constant angular velocity, for which we can use the relationship

w = θ / t

θ = w t

if we know the value of the angular velocity we can find the angular position, we must remember that all the angles must be in radians

suppose that the angular velocity is w = 10 rpm, let us reduce to the SI system

w = 10 rpm $(\frac{2\pi rad}{1 rev}) ( \frac{1 min}{60 s} )$

= 1,047 rads

let's calculate

θ = 1,047 20

θ = 20.9 rad

7 0

3 years ago

Explain a charged by neutral body negatively by induction

Tpy6a [65]

If a negatively charged object is used to charge a neutral object by induction, then the neutral object will acquire a positive charge. And if a positively charged object is used to charge a neutral object by induction, then the neutral object will acquire a negative charge.

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2 years ago

A temperature of a 0.349 kg sample of copper decreases from 87.0 °C to 21.0 °C. How much heat

Arte-miy333 [17]

We have that heat flow out of the copper sample is mathematically given as

Q=8.86809J

Question Parameters

A temperature of a 0.349 kg sample of copper
decreases from 87.0 °C to 21.0 °C.

Endothermic Reaction

It is common knowledge that an endothermic reaction is one where the system absorbs heat energy from the environs.

Exothermic Reaction

An exothermic reaction is one where the system releases heat energy to the environs.

Generally the equation for Heat is mathematically given as

$Q=mCdt\\\\Therefore\\\\Q=0.349*0.385*(87-21)$

Q=8.86809J

For more information on temperature visit

brainly.com/question/15267055

7 0

1 year ago