Answer the following questions.
1. What is the velocity of a car that traveled a total of 75 kilometers north in 1.5 hours?
2. What is the velocity of a plane that traveled 3,000 miles from New York to California in 5.0 hours?
3. John took 45 minutes to bicycle to his grandmother's house, a total of four kilometers. What was his speed in km/hr?.
4. It took 3.5 hours for a train to travel the distance between two cities at a speed of 120 miles/hr. How many miles lie between the two cities?​

∠p has a sine ratio of four-fifths.

The answer is option A.

Trigonometric Ratios are defined because the values of all the trigonometric features are based totally on the fee of the ratio of sides in a right-angled triangle. The ratios of sides of a right-angled triangle with recognition of any of its acute angles are referred to as the trigonometric ratios of that particular perspective.

The six trigonometric ratios are sine (sin), cosine (cos), tangent (tan), cotangent (cot), cosecant (cosec), and secant (sec).

In geometry, trigonometry is a department of mathematics that offers the sides and angles of a right-angled triangle. Therefore, trig ratios are evaluated with admire to aspects and angles.

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Answer: A

Explanation: Angle P

Answer:

The answer is True

Explanation:

I hope it helps

Answer:

it's true

Explanation:

High–pitched sounds have short wavelengths, which means that the peaks are close together. Low–pitched sounds have longer wavelengths, so the peaks are more spread out.

The work done by the electrostatic force on the moving point charge is 1.014 J.

d = √[(0.23 - 0.17)² + (0.27 - 0)²] = 0.277 m

F = kq₁q₂/r²

where;

F = (9 x 10⁹ x 2.4 x 10⁻⁶ x 4.9 x 10⁻⁶)/(0.17)²

F = 3.66 N

W = Fd

W = 3.66 x 0.277

W = 1.014 J

Thus, the work done by the electrostatic force on the moving point charge is 1.014 J.

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Explanation:

torque is just a force that acts off-center and causes an object to spin. Practically every quantity in translational motion has a rotational equivalent. Instead of linear acceleration, we have rotational (or angular) acceleration. Instead of forces, we have torques.

The temperature remain constant at the boiling point of water when the internal energy is increasing because: all the heat energy provided is used up in changing the state of water from liquid to gaseous water vapour.

A Change in state can be defined as the process of moving from one matter form to another due to heat supplied or removed.

A change in state can happen in different forms of matter.

In conclusion, The temperature remain constant at the boiling point of water when the internal energy is increasing because: all the heat energy provided is used up in changing the state of water from liquid to gaseous water vapour.

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Answer:

The magnitude of the normal force on the box is N= m*g + W

Explanation:

According to Newton's Second law and normal force.

so with the help of Newton's second law

we can write the equation for force:

F = ma

Since,

box is sitting on floor of an elevator.

there are two forces acting on this box:

So we can rewrite the previous equation as,

N - W = F

N - W = ma

hence,

N=m*a + W

this is the The magnitude of the normal force on the box.

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Answer:

B causes and effects

Explanation:

because florida have nitrate pollution

The object will remain at rest

Newton's first law states that if a body is at rest or moving at a constant speed in a straight line, it will remain at rest or keep moving in a straight line at constant speed unless it is acted upon by a force.

Here net force is zero

An object with a net force of zero acting on it will remain at rest, if initially at rest, or it will maintain a constant velocity.

F=MA

Force F=0

Than Acceleration A=0

With zero Acceleration stationary object  will remain at rest.

Hence Remain at rest is the correct answer

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A surprise to astronomers when they carefully examined Neptune with the Hubble Space Telescope in 1994 was that the Great Dark Spot had disappeared.

Neptune refers to the the eighth planet from the distance to the Sun, which was carefully observed with the Hubble Telescope in 1994.

Neptune had a Great Dark Spot that had disappeared in 1994, which represented a spectacular and giant storm.

In conclusion, a surprise when scientists examined Neptune with Hubble telescope was that the Great Dark Spot had disappeared.

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If the hoist tower isn't enclosed, the hoist platform must be totally enclosed on all sides for the full height between the floor and the overhead protective covering.

A hoist tower can be defined as temporary elevator shaft made of scaffolding that is constructed and used to provide pathways for hoisting materials during a building-construction work.

According to the Occupational Safety and Health Administration (OSHA), the hoist platform must be totally enclosed on all sides for the full height between the floor and the overhead protective covering when the hoist tower isn't enclosed.

In conclusion, the hoist platform must be totally enclosed on all sides in order to prevent a potential injury to construction workers or an accident during a building-construction work.

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Answer:

There can be no net charge inside the conductor, and the charge must reside uniformly on the outside surface of the sphere.

When there is charge present only on the surface, the sphere is called conducting shell.

Here, A conducting shell has total extra charge.

Gauss’s Law is defined as:

The electric field of conducting sphere of uniform charge:

From the Gauss law we can say that,  

There can be no net charge inside the conductor, and the charge must reside uniformly on the outside surface of the sphere.

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Answer:

The required time is 750 s.

Explanation:

The velocity of the man gets slowed by 2.0 m/s when the wind is blowing.

Therefore the speed of the man on the day of wind is (4.0-2.0)=2.0 m/s.

The time, speed and distance are related by the equation,

t=v/d

Given v= 2 m/s and d=1500 m.

The required time is,

t=1500/2

t=750 s

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The statement that is true about the forces exerted during the impact is that force that they exert on each other has the same magnitude (option A).

Newton's third law of motion states that to every action (force applied) there is an equal but opposite reaction (equal force applied in the opposite direction).

This law suggests that when a bowling ball rolls down a lane and hits a bowling pin. The bowling pin applies an equal force but in an opposite direction.

Therefore, the statement that is true about the forces exerted during the impact is that force that they exert on each other has the same magnitude.

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0.29 m/s is the speed of this wave.

Given: The wavelength of the wave traveling (∧) =35 cm

           The time period of the wave (t) = 1.2 sec.

           The frequency of the wave= 0.833 Hz

We need to find the wave speed of a wave.

                                                =  35 x 0.833

                                                = 29.167 cm/sec

                                                = 0.29 m/sec

Therefore, the speed of the wave is 0.29 m/s.

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2.25 m/s² of acceleration is required to increase the speed of a car from 26 mi/h to 51 mi/h in 5 seconds.

To find the answer, we need to know about the acceleration.

Thus, we can conclude that the constant acceleration is 2.25 m/s².

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911.4N is the air resistance force acting upward on the falling box.

The constant or the highest speed that an object reaches when it falls through a liquid or gas is referred to as terminal velocity.

At terminal velocity,

The Upward force acting on an object(F) = Weight of the falling object(W).

Due to the fact that the two forces are acting in opposing directions, there is no net force acting on the item, and that's why the speed of the object becomes constant.

The Formula used to calculate the Upward force

F = mg...….. Equation(1)

where,

m = total mass of the box

g = acceleration due to gravity = 9.8 [tex]m/s^{2}[/tex]

F = Air resistance force acting upward on the box

Given:

The box with its contents now has total mass of 93Kg

m = 93 kg

g = 9.8 m/s²

Substitute the values into equation (1)

F = 93×(9.8)

F = 911.4 N

Hence, the magnitude of the air resistance force acting upward on the falling box is 911.4N

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The torque required for the cylinder is 76.99 N m.

What is torque?

Torque may be defined as the product of the force and the distance perpendicular to the force from the axis of rotation.

Calculation of the angular acceleration:

The first kinematic equation for the rotational motion is,

ω=ω₀+αt

where ω₀ is the initial angular velocity, ω is the final angular velocity, α is the angular acceleration and t is the time. Since the cylinder starts from the rest, its initial angular velocity is zero.

Here, ω=320 rev/min or ω=320*2π/60 rad/sec, ω₀=0 and t=8.00 sec. Put these values in the above equation and solve it to get the value of angular acceleration.

320*2π/60=0+α*8

α=320*2π/(8*60)

α=4.19 rad/s^2

Calculation of the torque:

The torque T is given by the formula,

T=Iα

where I is the moment of inertia.

For the cylinder, I=1/2*mr^2

where m is the mass of the cylinder and r is the radius of the cylinder.

So,

T=1/2*mr^2*α

Here m=75 kg, radius r is half of the diameter r=1.4/2=0.7 m, and α=4.19 rad/s^2. Using these values in the formula of torque.

T=1/2*(75)*(0.7)^2*4.19

T= 76.99 N m

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Answer:

The answer to the question lies in the character of God. God is either finite or infinite. If God is finite and limited, then God could make a rock He could not lift. If God is unlimited in power, then He could create a rock of any size and weight and still be able to lift it.

Explanation:

Using the experimental result greatest electric fleld can be found in practical application.

According to the problem,

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Answer:

Force is the negative derivative of potential:

V = G M / R       potential at distance R from mass M

F = dV / dR = - G M / R^2        force at distance R from mass M

Kinetic energy as she hits the water is 3300 joule.

To find the answer, we need to know about the Newton's equation of motion.

V²=U²+2aS

Kinetic energy= 1/2×mass×velocity²

= 1/2 × 66 × 10²

= 3300J

Thus, we can conclude that the kinetic energy of the driver is 3300 Joule.

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The quantity of the charge that flows through the bulb is 300 Coulombs.

What is charge flow:

Formula of current:

Current is determined by the number of electrons passing through a cross-section in one second.

here,

current, I = 2 A

time, t = 2.5 minutes

t = 2.5* 60 = 150 seconds

substituting the values in formula,

I = Q / t

Q = I * t

Q = 2 * 150

Q = 300 coulombs

The quantity of the charge that flows through the bulb is 300 Coulombs.

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Answer:

An electrically polarized object can carry no net charge

Example: charge Q at +x   and charge -Q at -x        for no net charge

An electrically charged object has a net charge on the object

The force between the planets will not change after doubling the masses of the planets and distance between them.

To find the answer, we need to know about the gravitational force of attraction.

= GMm/r²

Thus, we can conclude that the gravitational force will not change of the masses are doubled and the separation is also doubled between the planets.

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The maximum velocity reached by the person is determined as 11.1 m/s.

The area under the velocity time graph is the total displacement of the person.

Total Area = area of triangle formed during first 2 seconds + area of rectangle during the last 8 seconds

100 = ¹/₂(2v) + v(11 - 2)

where;

100 = v + 8v

100 = 9v

v = 100/9

v = 11. 1 m/s

Thus, the maximum velocity reached by the person is determined as 11.1 m/s.

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Answer:

visual are used as a way for our brains to Kriti understand information which is the powerful tool is used for glass can show a large amount of data quickly in a way that it is to process with a bunch of numbers

Explanation:

graph and charts communicate information visually they can show pattern self scientist simply corrections and guess the point of experiment across quickly depended variable is y axis

Gabrielle has just upgraded her oil-burning furnace to a  Forced air system.

A furnace is a place where combustion takes place. In a furnace, it is normal to burn a carbonaceous material and produce energy in the process.

The type of furnace that  takes cool air from outside and passes it through the heat source using a fan or blower is a  Forced air system. Hence, Gabrielle has just upgraded her oil-burning furnace to a  Forced air system.

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Answer:

It will cover a distance of 90.155 m.

Explanation:

For the first case, using the kinematic equation 3,

v^2-u^2=2as

Here v=0, u=50 km/h which is 13.88 m/s and x=10 m. so

0-(13.88)^2=2*a*10

a=9.63 m/s^2

For the second case, u=150 km/h which is 41.67 m/s.

If the acceleration is same for this case, then using the same kinematic equation.

0-(41.67)^2=2*9.63*s

s=90.155 m

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