A force of 50N acts in an easterly direction on an object at the same time as a force of 80N pushes on it in the direction of N 45 degrees E. Determine the magnitude and direction of resultant force

Answer:

b) the alkali metals

plus information:

F has the highest electronegarivity

Fr has the lowest electronegarivity

Answer:

The horizontal velocity of a projectile is constant, There is a vertical acceleration caused by gravity; its value is 9.8 m/s/s, down, The vertical velocity of a projectile changes by 9.8 m/s each second, The horizontal motion of a projectile is independent of its vertical motion.

Explanation:

Answer:

3.33A

Explanation:

total resistors in series circuit (4.0+2.0) = 6.0

following ohms law. V = IR, then I = V/R; but the supply voltage given equals =20,

therefore, 20/6 = 3.33A,

Answer:

number of protons = 3

number of neutrons = 4

Explanation:

so now we know that the number of protons are 3 ( electron number is also three )

so in the middle draw four neutrons and three protons then draw two shells with two in the first shell and one in the outermost shell

Answer:

carbohydrates

Explanation:

Answer:

C. Probably not since that system deals mostly with mobility.

Explanation:

Answer:

On Earth,

g

=

9.8

m/s

2

. So, the object's weight on Earth will be:

W

=

50

kg

⋅

9.8

m/s

2

=

490

N

Explanation:

Explanation:

unbalanced: a turning vehicle, apple falling on the ground, kicking a ball

balanced: floating on water, fruit hanging from tree, tug of war equally balanced teams

Answer:

1. If you “feel the burn” while exercising, what is actually going on in your body?

= D. Lactic acid is taking the place of oxygen in the muscle.

2. Why does strenuous activity make the heart beat faster?

= C. The body requires more oxygen when exercising.

3. When lifting something heavy, which is the MOST important factor in doing it safely?

= C. your form when you are lifting.

4. Sasha does not have access to a gym or fitness equipment. Is it possible for him to develop a good fitness routine with what he has at home?

= D. Yes, there are cardio and strength training exercises he can do without equipment.

5. Aerobic exercise is good for many of the main systems of the body. Which of the following does it NOT help with?

= A. flexibility

Please find attached photograph for your answer.

Hope it helps.

Do comment if you have any query.

The friction force acting on the table is equal to 366 Newton.

Given the following data:

To calculate the friction force acting on the table:

The force of friction acting on the table is given by this mathematical expression:

[tex]Force - Force \;of\; friction = Net \;force[/tex]

Substituting the given parameters into the formula, we have;

[tex]420 - F = 1.8 \times 30\\\\420 - F = 54\\\\F = 420-54[/tex]

Force of friction, F = 366 Newton

Complete Question:

Brenda wants to move a 30.0 kg table, She applies a force of 420 N. Under these conditions, the table initially moves with an acceleration of 1.80 [tex]m/s^2[/tex]. Calculate the friction force on the table

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The tension in the bicep for the given weight of barbell been supported by the hand is 450 N.

According to Newton's third law of motion, action and reaction are equal and opposite.

When the barbell is held, its weight acts downwards while the force exerted by the bicep pulls the barbell upwards.

A sketch of the force diagram is presented below;

                                                 ↑ Tension in the bicep

                                                 ↑

                                                ⊕

                                                 ↓

                                                 ↓ force of the barbell

Tension in the bicep = force of the barbell

Tension in the bicep = 450 N

Thus, the tension in the bicep for the given weight of barbell been supported by the hand is 450 N.

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Answer:

Gravitational potential energy

Explanation:

PE = m*g*h

m = mass

g = 9.81m/s², acceleration of gravity

h = height

So m and g stay the same but the height can change so the higher you go the higher the Gravitational potential energy.

Placing a soccer ball on the top shelf increases the Gravitational potential energy

In a gravitational field the energy possessed by an object due to a change in its position called as gravitational potential energy, it is an energy that is related to gravitational force or to gravity.

When a mass of the body  (m) is moved from infinity to a point inside the gravitational influence of a source mass (M) in absence of acceleration and the amount of work done in displacing it into the source field is stored in the form of potential energy denoted with the symbol Ug.

when external force is applied, then the  position of the body changes potential energy is equal to the amount of work done on the body by the forces.

The gravitational influence on a body at infinity is zero, then the  potential energy is zero, PE = m*g*h where m = mass, g = 9.81m/s², acceleration of gravity, h = height

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Answer:

You are absolutely correct

that's the answer, I think it's helpful

Answer: Force (F=m*a)

Explanation:

Answer:

Newton's 2nd law of motion is the formula for force.

Explanation:

The formula is f = m × a

Force = mass × acceleration

Answer: I believe it’s physical therapist

Explanation:

Good career for a someone interested in exercise physiology is physical therapist.

Physical therapists assist persons who are ill or injured with better movement and pain management. They frequently play a significant role in the prevention, rehabilitation, and treatment of individuals with long-term illnesses, injuries, or disorders.

Physical therapists evaluate each patient before creating a therapy plan to enhance their mobility, lessen or manage pain, and regain function.

The physiology of physical exercise is known as exercise physiology. It is one of the allied health fields that incorporates research on both acute and long-term adaptations to exercise.To identify the greatest feasible exercise and fitness routine, exercise physiologists examine a patient's medical history.

Good career for a someone interested in exercise physiology is physical therapist.

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It is gravity that causes planets to orbit around each othe—for example, Earth orbits around the Sun. During the daytime of its orbit, the Sun provides sunlight that produces vegetation for creatures to eat and light for us to see. However, it can cause a thunderstorm and when it comes, it can set trees on fire releasing carbon dioxide into the atmosphere and producing global warming, melting glaciers.

Answer:

1. directly

2. inversely

Explanation:

The relationship between the energy of a photon and its frequency is dictated by another simple equation:

E = hv = hc/λ

where E is the energy in kiloJoules per mole, h is Planck's constant with a value of 6.626 x 10-34 Joule-seconds per particle, λ is the wavelength of light λ in meters,  and c is the speed of light with a constant value of 300 million meters per second. From this equation, it is clear that the energy of a photon is directly proportional to its frequency and inversely proportional to its wavelength. Thus as frequency increases (with a corresponding decrease in wavelength), the photon energy increases and vice versa.

Energy of a photon is directly proportional to frequency, and inversely proportional to wavelength.

Energy is the ability or capability to do tasks, such as the ability to move an item (of a certain mass) by exerting force. Energy can exist in many different forms, including electrical, mechanical, chemical, thermal, or nuclear, and it can change its form

The relationship between the energy of a photon and its frequency is

E = hv = hc/λ

where E is the energy in kiloJoules per mole,

h is Planck's constant with a value of 6.626 x 10-34 Joule-seconds per particle,

λ is the wavelength of light λ in meters,  

c is the speed of light with a constant value of 300 million meters per second.

From this equation, it is clear that the energy of a photon is directly proportional to its frequency and inversely proportional to its wavelength.

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Answer: Boyle's law states that when the pressure of a given mass of an ideal gas is inversely proportional to its volume at a constant temperature.

Explanation:

Answer: Provided temperature remains constant, the volume and pressure of a gas are inversely related.

Explanation: Robert Boyle discovered that as long as the temperature of a gas remains constant, the relationship between the volume and the pressure of the gas is inverse. Basically, as the volume of a gas increases, its pressure decreases. As the pressure of the gas increases, its volume decreases.

Materials  that could be used to model the  oceanic crust versus continent

The lithosphere is the solid part of the earth's crust. It consists of both the soil and the  rocks that are found on the earth's crust. Hence it portrays the idea of solmething that is strong.

In that sense good materials  that could be used to model the  oceanic crust versus continental crust are; continental crust: glass; oceanic crust: Styrofoam

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Answer:

the phase is a full moon

Explanation:

A lunar eclipse can only happen when the sun, Earth and moon are perfectly line up.

Answer:

gamma, ultraviolet. infrared,  microwave

gamma, ultraviolet. infrared,  microwave are the electromagnetic spectrum.

The range of all EM radiation types is known as the electromagnetic (EM) spectrum.

The visible light from a bulb in your home and radio waves from a radio station are two examples of electromagnetic radiation. Radiation is energy that moves and disperses as it does.

The range of electromagnetic radiation's frequencies, along with their corresponding wavelengths and photon energies, is known as the electromagnetic spectrum.

Microwaves, infrared light, ultraviolet light, X-rays, and gamma rays are the other EM radiation types that make up the electromagnetic spectrum.

Therefore, gamma, ultraviolet. infrared,  microwave are the electromagnetic spectrum.

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The thermal energy created when the crate slides at the given distance is 6,192.8 J.

The given parameters;

The thermal energy created is the energy lost due to friction and it is calculated as follows;

[tex]W = \mu F_n d[/tex]

where;

[tex]\mu[/tex] is the coefficient of friction

The coefficient of friction is calculated as;

[tex]\mu = tan(\theta)\\\\\mu = tan(35)\\\\\mu = 0.7[/tex]

The work done against friction is calculated as;

[tex]W = \mu F_n d\\\\W = \mu (Wcos\theta ) d\\\\W = 0.7 \times 900 \times cos(35) \times 12\\\\W = 6,192.8 \ J[/tex]

Thus, the thermal energy created when the crate slides at the given distance is 6,192.8 J.

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Answer:

a rock slide sometimes a mud slide if waters involved

(a) The angular speed of Allen is 0.628 rad/s.

(b) The angular speed of Beth is 0.628 rad/s.

(c) The linear speed of Allen is 2.512 m/s.

(d) The linear speed of Beth is 1.256 m/s.

The given parameters;

The angular speed of Allen is calculated as follows;

[tex]\omega = \frac{1 \ rev}{10 \ s} \times \frac{2\pi \ rad}{1 \ rev} \\\\\omega = 0.628 \ rad/s[/tex]

The angular speed of Beth is calculated as follows;

[tex]\omega = \frac{1 \ rev}{10 \ s} \times \frac{2\pi \ rad}{1 \ rev} \\\\\omega = 0.628 \ rad/s[/tex]

Allen and Beth make the same number of revolutions every 10 seconds, hence their angular speed is the same.

The linear speed of Allen is calculated as follows;

[tex]v = \omega r\\\\v = 0.628 \ rad/s \times 4 \ m\\\\v = 2.512 \ m/s[/tex]

The linear speed of Beth is calculated as follows;

[tex]v = \omega r\\\\v = 0.628 \ rad/s \times 2 \ m\\\\v = 1.256 \ m/s[/tex]

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Answer:

gas vibrates and moves freely at high speeds.

Explanation:

Hope this helps

Answer:

Explanation:

M(a+g)

The force acting on the top box by the bottom box both having a mass of m stacked in an elevator moving upward with an acceleration of a is,

m(a +g).

Force is an external factor acting on a body to change it from the state of motion or rest. There are different types of forces such as gravitational force, nuclear force, tension force etc.

Newton's second law states that the force acting on a moving body is the product of its mass and acceleration. If the body of mass m is moving upward with an acceleration a, the force F will be equal to ma.

If the body moves downwards, then the net acceleration is the gravity g that is 9.8 m/s².

Here, both the boxes are moving upward and experience an acceleration a. The force exerted by the box at the bottom is with the acceleration g.

Thus ,the net force experienced by the box at the top by the box at the bottom is equal to F= m (a + g) .

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Answer:

The time is identical, since both pulses travel at the speed of light.

Explanation: