Physics High School

please answer correctly

Answers

Answer 1

Answer:pretty sure it’s 3

Explanation:

Related Questions

The speed of a wave is 70 m/s. If the wavelength of the wave is 0.4
meters, what is the frequency of the wave?

Answers

Answer:

dont know still in 7gd

Explanation:

Answer:

Leo no i dont ansver

Explanation:

ezgisu0613062011 http ()/_

How can circular motion be accelerated when speed is constant?
A. Because of the accelerator pedal in the vehicle
B. Because Newton said
C. Because direction changes
D. Because the vehicle has circular wheels

Answers

Answer:

Correct answer is C: Because direction changes.

Explanation:

Hope you have a wonderful weekend.

Two examples of inventions that increase friction?

Answers

Answer:

My hard pp...............

Explanation:

Human sense impressions are subjective and qualitative
making them difficult to record or compare.
TRUE
FALSE

Answers

Answer:trueee

Explanation:

Can we track the movement of energy in nature

Answers

Yes you can it is possible

3. Explain what the law of conservation of momen-
tum means, and give example.

Answers

Answer:

The law of momentum means

Explanation:

1. What do the elements Sulfur (S), Nitrogen (N), Phosphorous (P), and Bromine (Br) all have in
common?

Answers

I have no idea just getting points

What are the two forces that are acting on the skydiver? What is
the relationship between these two forces? Explain.

Answers

Answer:

Gravity provides a downward force, resulting in the diver going downward. They speed up like any falling object would, the pull of gravity is a dominant force. (There is a drag force – as a result of moving through the air.)

Engineers at the Space Centre must determine the net force needed for a rockets engine to achieve an acceleration of 70 m/s2. Assume the rocket is in outer space with no gravitational or other forces acting on it. If the mass of the rocket is 45 000 kg, what force is required to be produced by the rocket engines?

Answers

Answer:

3,150,000N

Explanation:

According to Newton's second law;

F = mass * acceleration

Given

Mass = 45000kg

acceleration = 70m/s^2

Substitute

F = 45000 * 70

F = 3,150,000N

Hence the force required to be produced by the rocket engines is 3,150,000N

Answer:

3,150,000 Newtons

Explanation:

F=M*A

F=45,000kg times (*) 70 m/s squared

F=3,150,000N (newtons)

What is the name of this muscle?

Answers

Answer:

shoulder

it is at the shoulder region

Explanation:

shoulder

Shoulder
It’s on the shoulder

What is the number of
Protons-
Electrons-
Neutrons-
that are in bismuth?

Answers

Explanation:

Number of :

Protons - 83

Neutrons - 126

Electrons - 83

In Bismuth.

Also it has a atomic mass of 208.98038 units.

The musical tone a piano has a frequency of 346HZ and a wavelength of 1.3 M what is the speed of the sound

Answers

Answer:

v= 449.8 m/s

Explanation:

Given data

Frequency= 346Hz

Wave length= 1.4m

The expression below is used to find the speed

[tex]v= f \lambda\\\\[/tex]

substitute

[tex]v= 346*1.3\\\\v= 449.8 m/s[/tex]

Hence the speed is v= 449.8 m/s

calculate the power used by a 40kg man if he climbs a 6m tall ladder in 15 seconds

Answers

Answer:

(i)

Force of gravity acting on the boy = mg

= 40 * 10

= 400 N

(ii)

Work done by him = mgh

= 40 * 10 * 0.08

= 32 J

(iii)

Power = Work / Time

= 32 / 5

= 6.4 Watt

Explanation:

hope this helps

When a tree sloth is moving up a tree trunk with a velocity of 0.743 m/s, how long would it take the sloth to travel 22.30 meters?

Answers

Answer:

30.0 s

Explanation:

i found the answer

a ball of mass 1kg is being suspended 10m above the ground & is then dropped. what is the balls kinetic energy just before it hits that ground ?

a. 10 J
b. 98 J
c. 50 J
d. 0 J

Answers

Answer:

E = 98 J

Explanation:

Given that,

The mass of a ball, m = 1 kg

It is being suspended 10m above the ground & is then dropped.

We need to find the ball's kinetic energy just before it hits that ground. The conservation of energy holds here. It means, the kinetic energy just before it hits that ground is equal to its potential energy i.e.

[tex]E=mgh\\\\E=1\times 10\times 9.8\\\\E=98\ J[/tex]

so, the required energy is 98 J. Hence, the correct option is (b) "98 J".

2. Which of the following wavelength properties would require a stopwatch to measure?
A wavelength
B amplitud
C frequency
D height

Answers

Answer:

A. wavelength

Explanation:

The others are about sound and how high it is. That has nothing to do with time.

Question : Which of the following wavelength properties would require a stopwatch to measure ?

A - wavelength

B- amplitude

C- frequency

D- height

MY ANSWER : C- FREQUENCY

MWAHHH LOVE - HAVE A RESTFUL NIGHT !

1. Hearing is also known as
?

Answers

I’m not sure what your quite asking for, but some people say auditory perception instead of hearing

if you already have the time which is 4s and the initial velocity which is 9.8m/s and the acceleration which is -9.8m/s/s. what would the dispacement be?

Answers

Answer:10

Explanation:

2+2=10

Answer:

Explanation:

2+8=10

6+4=10

5+5=10

7+3=10

9+1=10

3+2+4+1=10

Examples of electric forces?

Answers

Answer:

Explanation:

The examples of electric force are

The charge in a bulb.

Electric circuits.

Static friction between cloth when rubbed by a dryer.

The shock that is felt after touching a doorknob.

Substance A has twice the specific heat capacity as substance B. If 1000 J of heat are added to 1.0 kg of each substance, compare the change in temperature of each substance.

Answers

Substance A would have a delta T (change in temp) rise 1/2 the rise in substance B.

Q=mc x delta T

Q= heat energy in Joules
m= mass of substance heated or cooled
c= specific heat
ΔT is change in temp.

Solve for change in temp=. Q/mc

Specific heat and mass are not inversely proportional to heat energy input.

Putting into real world scenario of using water to heat a building.

Specific heat of water is 1.
It takes 1 btu to raise one pound of water 1 degF. at a base of 60 degF

Acetone specific heat is .51

So it takes half the amount of heat input to get a 100 degree ΔT, as compared to water.

PLEASE HURRYYYy THIS IS DUE IN 5 minutes!!!!!!
Find the momentum of a 3.0kg mass when it is stopped.

Answers

Answer:

there is no momentum

Explanation:

What is a set in Gym?

Answers

Answer:

repetitions of a certain exercise

Explanation:

Isotopes _____ at very different rates.

Answers

Answer:

i think its decay?

Explanation:

ILL GIVE BRAINLYyYYYyYYyyyyy
The best thermal insulators _____________________.

have free electrons.

are metals.

conduct heat well.

are gases.

Answers

Answer:

The best thermal insulators have free electrons

A- Lunar Eclipse

B- Neap Tide

C- Spring tide

D-Solar tide

Answers

A) Lunar eclipse babe

D Solar tide

Explanation:

Because d is closer to the sun

which best explains why offspring created through sexual reproduction have greater variation than those created through asexual reproduction

Answers

Answer:

its fun

Explanation:

I like fun OWo

A 13.0km bucket is lowered vertically by a rope in which there is 170N of tension at a given instant. Determine the magnitude of the acceleration of the bucket. Is it up or down?

Answers

Answer:

13.07m/s2 down

Explanation:

I think the equation would be

Fnet/m=a

since tension is the only force mensioned that means that

170N/13.0kg=13.07 m/s2 down

acceleration is down

The specific heat capacity of copper is 390 J/Kg AC. What does this
mean?

Answers

Answer:

It means that 400 J of heat is the required amount to raise or lower thh temperature of a 1kg piece of copper

Explanation:

390 J/Kg °C specific heat capacity of copper means, 390 J of energy is required to raise the temperature of 1 kg of copper by 1 °C

From the given information,

The specific heat capacity of copper is 390 J/Kg °C. To determine what this means, we will define the term specific heat capacity.

The specific heat capacity of a substance is the amount of energy required to raise the temperature of 1 kg of the substance by 1 °C.

Therefore, 390 J/Kg °C specific heat capacity of copper means, 390 J of energy is required to raise the temperature of 1 kg of copper by 1 °C.

Hence, 390 J/Kg °C specific heat capacity of copper means, 390 J of energy is required to raise the temperature of 1 kg of copper by 1 °C.

Learn more here: https://brainly.com/question/20879870

pls help answer embed

Answers

Answer:

C = 1.01

Explanation:

Given that,

Mass, m = 75 kg

The terminal velocity of the mass, [tex]v_t=60\ m/s[/tex]

Area of cross section, [tex]A=0.33\ m^2[/tex]

We need to find the drag coefficient. At terminal velocity, the weight is balanced by the drag on the object. So,

Weight of the object = drag force

R = W

[tex]\dfrac{1}{2}\rho CAv_t^2=mg[/tex]

Where

[tex]\rho[/tex] is the density of air = 1.225 kg/m³

C is drag coefficient

So,

[tex]C=\dfrac{2mg}{\rho Av_t^2}\\\\C=\dfrac{2\times 75\times 9.8}{1.225\times 0.33\times (60)^2}\\\\C=1.01[/tex]

So, the drag coefficient is 1.01.

WILL GIVE BRAINLIEST

Answers

The first, fourth, and fifth answers are correct.

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