why the speed of sound is different through these materials? (1 point)

Answer: They have different rigidities.

Explanation:

PLEASE HELPP IL GIVE BRAINLY AND HEART

if the land warms faster than the sea during the day, which breeze is experienced ( Assume during the day and that the land asd sea do not have the same temperature. )

A) Sea breeze

B ) Land breeze

C ) No breeze

**Answer:**

sea breeze

**Explanation:**

**Answer:**

A sea breeze

**Explanation:**

Recall: earth applies _____________ on Earth or equivalently

**Answer:**

gravitational attraction

What does it mean with the car accelerates but in the opposite direction of the car?

**Answer:**

When an object slows down, its acceleration is opposite to the direction of its motion. This is known as deceleration.

**Explanation:**

How long will it take for a basketball spinning on someone’s finger to stop if it undergoes and angular acceleration of -0.15 rad/s and is traveling at 27 rad/s initially? How many revolutions will it make?

The basketball's angular velocity *ω *at time *t *is

*ω* = 27 rad/s + (-0.15 rad/s²) *t*

It comes to a stop when *ω* = 0, which happens for

0 = 27 rad/s - (0.15 rad/s²) *t*

*t* = (27 rad/s) / (0.15 rad/s²)

*t*** = 180 s**

In this time, the ball would undergoes an angular displacement *θ* of

*θ* = (27 rad/s) *t* + 1/2 (-0.15 rad/s²) *t* ²

Plug in *t* = 180 s and solve for *θ* :

*θ* = (27 rad/s) (180 s) - 1/2 (0.15 rad/s²) (180 s)² = 2430 rad

One complete revolution corresponds to a turn of 2*π* rad, so the ball makes

(2430 rad) / (2*π* rad/rev) ≈ 386.747 rev

or about **387 revolutions** as it slows down.

Explain why a charged body loses its charge if we touch it with our hand?

if u answer me I can give u brainliest ☺️

**Answer:**

Explanation: A charged body loses its charge when we touch it with our hand because some of the charge flows through our body to the ground earthing. As a result the charge on the body decreases every time we touch it. This is because of earthing.

**Explanation:**

**yw .**

**Explanation:**

When we touch a charged body, it loses its charge, due to the process of earthing. Our body is a good conductor of electricity. It transfers the charges to the earth

What type of Circuit do they use in a home? WHY ? (Simple circuit / Parallel circuit / Series circuit)

**Answer:**

Parallel Circuits

**Explanation:**

Loads can be operated on their own. If you had a series circuit, adding another light would dim the rest!

Use the following information about Earth and its moon to determine the distance between them. Earth's mass = 6.0 x 1024 kg Moon's tangential speed = 1,025 m/s Earth's radius = 6.4 x 10 m Moon's mass = 7.3 X 1022 kg 4.6 x 106 m O 3.8 x 108 m O 3.9 x 1011 m

**Answer:**

3.8 × 108 m

**Explanation:**

Use formula: v^2 = G x m central / r

G = 6.77 e-11

Also, it was right on Edge.

Good luck!

The distance between **Earth **and its **moon **is **3.8×10⁸ m.**

What is centripetal force?

A force that causes a body to follow a curved path is known as a **centripetal force**. It always moves in a direction that is the opposite of the body's **velocity **and in the direction of the immediate center of curvature of the path.

It is "a force by which bodies are dragged or driven, or in any manner tend, towards a point as to a **center**," according to Isaac Newton.

Given parameters:

**Mass **of the Earth: M = 6.0 × 10²⁴ kg.

**Mass **of the moon: m = 7.3 × 10²² kg.

Moon's tangential **speed**: v = 1,025 m/s

Let the distance between the **center **of Earth and the moon is r.

Hence,

GMm/r² = mv²/r

r = GM/v²

= 6.7 × 10 ⁻¹¹ × 6.0 × 10²⁴ / (1,025)²

=** 3.82×10⁸ m.**

Hence, by subtracting Earth's **radius **= 6.4 x 10⁶ m, we get, the **distance **between Earth and its moon is 3.8×10⁸ m.

Learn more about **centripetal force **here:

https://brainly.com/question/11324711

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The graph shows the amplitude of a passing wave over time in seconds (s) What is the approximate frequency of the wave shown? A. 6 Hz B. 0.2 0.4 Hz

**Answer:**

0.2 I took the test

**Explanation:**

I took the test

The** time period** of the whole **wave cycle** is 6 seconds but the time period of one complete wave is about 4 seconds here. The inverse of this time period is the **frequency**, that is 0.2 Hz.

**Frequency** by definition is the number of events per unit time. Frequency of a wave is the number of **wave cycles** in one second. It is the inverse of the time period.

Frequency is directly related to the energy of the wave. As the frequency increases, **energy** of the wave also increases. In the given graph the wave cycle is given for a time of 6 seconds.

The** time period** for one complete wave is 4 second from the graph.

thus, T = 4 s

v = 1/T

= 1/4 = 0.2 s⁻¹ or 0.2 Hz

Therefore, the frequency of the wave shown, is 0.2 Hz.

Find more on **frequency**:

https://brainly.com/question/14316711

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why Newton law of gravitational force is called universal law

**Answer:**

Newton's law of gravitational holes good irrespective of the nature of two bodies., i.e., big or small, at all times, at all locations and for all distances in the universe.

**Explanation:**

It is called so because it is applicable on all bodies having mass, and the bodies will be governed by the same law, that is newton's law of gravitation. Thus, as it is applicable universally, it is called as universal law.

It’s called “Universal law” because it pretty much applies across the whole universe

Hence why the name implies it lol

Hence why the name implies it lol

What name is given to the turning effect of a force?

**Answer:**

The turning effect of a force is known as the moment. It is the product of the force multiplied by the perpendicular distance from the line of action of the force to the pivot or point where the object will turn. When undoing a nut fastened to a screw by hand one realises that the amount of force required is a lot greater than when undoing the same nut using a spanner.

**Explanation:**

ANSWER BOTH ASAP NEED HELPPP

The first one is conduction and the second one is radiation

Name two devices we use generators in. Describe how they work.

**Answer:**

There are two fundamental types of generators known as AC (alternating current) and DC (direct current) generators. While the technique of producing electricity is the same in both types, AC and DC power become different in terms of their applications – the way in which loads receive electric power.

**Explanation:**

An electric generator is a device that converts mechanical energy obtained from an external source into electrical energy as the output. ... Instead, it uses the mechanical energy supplied to it to force the movement of electric charges present in the wire of its windings through an external electric circuit.

What is mass? (Specific simple answer)

Mass, in physics, quantitative measure of inertia, a fundamental property of all matter. It is, in effect, the resistance that a body of matter offers to a change in its speed or position upon the application of a force. The grater the mass of a body, the smaller the change produced by an applied force.

**Answer:**

Mass is the quantity of substance in an object

PLS ANSWER FAST WILL GIVE BRAINLY!!!!!!

.What are some observations we can make to determine if something has energy?

**Answer:**

if somthing is warm or if somthing moves it usally has energy

The faster an object moves:

A the more potential energy it has.

B the more kinetic energy it has.

C the faster its particles vibrate.

D the cooler it gets.

The answer would be B

**Answer:**

b the more genetic energy

A wave frequency of 440 Hz travels through a medium at 343 m/s. Calculate the wavelength

for this wave.

150,920 m

1.28 m

97 m

0.078 m

**Answer:**

0.78 m

**Explanation:**

us the formula

speed = frequency x wavelength

343 = 440 x wavelength

343 / 440 = wavelength

wavelength = 0.78 m

I think the last option, you wrote wrongly, it is supposed to be 0.78 not 0.078 .

if you think I am wrong please do tell me, I will redo this.

hope this helps

Which of the following instruments measures time most accurately?

a. Sundial

b. quartz watch

c. pendulum clock

d. watch with balance wheel

**Answer:**

b) Quartz Clock

**Explanation:**

It's is a very type of clock which uses the vibration of quartz crystals to measure time accurately

B is the answer hope this helps

A force of 900 N pushes a wedge 0.10 m into a log. If the work done on the log is 50 J, what is the efficiency of the wedge?

HELPPPP

Answer:

55.56%

Explanation:

We'll begin by calculating the work done in pushing the wedge. This can be obtained as follow:

Force (F) = 900 N

Distance (s) = 0.1 m

Workdone (Wd) =..?

Wd = F × s

Wd = 900 × 0.1

Wd = 90 J

Finally, we shall determine the efficiency. This can be obtained as follow:

Work output = 50 J

Work input = 90 J

Efficiency =?

Efficiency = work output / work input

Efficiency = 50 / 90 × 100

Efficiency = 55.56%

Thus, the efficiency is 55.56%

Which of the following is a basic solution?

**Answer:**

what exactly are the following?

what is the physical properties of radon

**Answer:**

**Explanation:**

Which of the following equations correctly models a balanced single replacement reaction?

**Answer:**

d

**Explanation:**

is the answer

is there a gravitational force of attraction between your phone and the earth?

Yes. When you let go of your phone it will fall to the earth because of Gravitational pull. If it did not exist the phone would float like in space

The Atoms Family

Sub-atomic Particle Charge

Location in the atom Mass of particle

Proton

Neutron

Electron

What question are you asking?

What made heliocentrism scientific?

Heliocentrism is the astronomical model in which the Earth and planets revolve around the Sun at the center of the Solar System. Historically, heliocentrism was opposed to geocentrism, which placed the Earth at the center.

The property of a moving object that makes it hard to stop is

Momentum is a property of a moving object that makes it hard to stop. It equals the object's mass times its velocity.

Empujamos un baúl 3 metros, para ello aplicamos una fuerza de 200 Newton. ¿Cuál es el trabajo realizado?

Answer:

Trabajo realizado = 600 Nm

Explanation:

Dados los siguientes datos;

Fuerza = 200 Newton

Distancia = 3 metros

Para encontrar el trabajo realizado; Trabajo realizado = fuerza * distancia

Sustituyendo en la ecuación, tenemos; Trabajo realizado = 200 * 3

Trabajo realizado = 600 Nm

AFTER a ringing tuning fork passes very quickly in front of a stationary observer...

a) The sound waves are equally spaced out

b) The sound has a lower pitch

c) The sound waves have equal amplitudes

d) all could apply

According to the Doppler effect page I just read it should be D

A car manufacturer wants to change its car’s design to increase the car’s acceleration. Which changes should the engineers consider making to the design? increase the force that the engine provides decrease the force that the engine provides increase the mass of the car decrease the mass of the car increase the top velocity the car can travel decrease the top velocity the car can travel

Answer:

I. increase the force that the engine provides.

II. decrease the mass of the car

Explanation:

Newton's Second Law of Motion states that the acceleration of a physical object is directly proportional to the net force acting on the physical object and inversely proportional to its mass.

Mathematically, it is given by the formula;

Force = mass * acceleration

[tex] Acceleration = \frac {Force}{mass} [/tex]

In this scenario, a car manufacturer wants to change its car’s design to increase the car’s acceleration. Thus, the changes the engineers should consider making to the design is to increase the force that the engine provides and decrease the mass of the car.

*Answers:*

The wood wrangler track team traveled South toward Garner Middle

School, they drove 20 km in 10 min, what was the VELOCITY of the team?

0.5 km/min

0.5 km/min SOUTH

2 km/min

2 km/min SOUTh

**Answer:**

2km/min

**Explanation:**

Velocity= change in distance / time taken

Velocity = 20km/10min=2km/min south

South is placed there to show what direction she went, as velocity has both magnitude and direction

On hot sunny days or days with thin clouds, the temperature over the land is warmer than the temperature over the water. The warmer air rises and the cooler air moves over the land, producing sea breezes. This means that,

A: Water takes longer to heat up than the land

B: Soil warms up more slowly than the water

C: The air above the land becomes cool and rises

D: Land takes longer to heat up tan the water

**Answer:**

i think it would be a but i am not 100% sure on that

Write a number with one decimal place, that is bigger than 5 1/3but smaller than 5.5
Saginaw Inc. completed its first year of operations with a pretax loss of $692,500. The tax return showed a net operating loss of $884,500, which the company will carry forward. The $192,000 booktax difference results from excess tax depreciation over book depreciation. Management has determined that it should record a valuation allowance equal to the net deferred tax asset. Assuming the current tax expense is zero, prepare the journal entries to record the deferred tax provision and the valuation allowance. (If no entry is required for a transaction/event, select "No Journal Entry Required" in the first account field.)
Please help, I'll give 5 stars and brainliest!
Can someone please help me!!
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solve this problem please
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Va roggg ex 1 2 3 !!!
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