Which object has a net force of –5 N down?

Answer:

the scattering of short wavelengths as light

passes through the atmosphere

Answer:

The new speed of the aircraft with respect to the ground is 1414.3 mph.

Explanation:

Given that,

Angle = 37°

Velocity of jet airliner = 693 mph

Velocity of wind = 798 mph

We know that,

The new velocity of the aircraft with respect to the ground

[tex]v=v_{a}+v_{w}[/tex]

We need to calculate the new speed of the aircraft with respect to the ground

Using formula for velocity

[tex]v=\sqrt{(v_{a})^2+(v_{w})^2+2v_{a}v_{w}\cos\theta}[/tex]

Put the value into the formula

[tex]v=\sqrt{(693)^2+(798)^2+2\times693\times798\cos37}[/tex]

[tex]v=1414.3\ mph[/tex]

Hence, The new speed of the aircraft with respect to the ground is 1414.3 mph.

Answer:

10 m/per second

Explanation:

he speeds up 10 m in a single second

Answer:

B.

Explanation:

The one that demonstrate the result of waves traveling at different speeds when moving from one medium to another is the bending of light as it moves from air to water. The correct option is B.

Even though waves travel at different speeds through different mediums, light bends or is refracted as it travels from one medium to another.

The degree to which it bends is referred to as the index of refraction. Light bends more as the index of refraction increases.

The change in direction of waves that occurs when they travel from one medium to another is referred to as refraction.

Refraction is always accompanied by a change in wavelength and speed. The bending of waves around obstacles and openings is known as diffraction.

The bending of light as it moves from air to water is an example of the result of waves traveling at different speeds when moving from one medium to another.

Thus, the correct option is B.

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Explanation:

Troy ounce 1 32.15075

Gram 31.1034768 1000

Kilogram 0.03110348 1

Tola (South Asia) 2.6666675 85.73535

Answer:

10 m/s²

Explanation:

9kg= mass 90N=force acceleration=?

the equation is;

Acceleration (m/s²)= force(N) ÷ mass(kg)

Answer:

in science and engineering , the weight of an object is the force acting on the object due to gravity.

Answer:

Tech B

Explanation:

The control of electric actuators may be through through a two-wire or a five-wire circuit through the driver circuit by bidirectionally controlling via the motor wire polarity. The door position is determined by counting the actuator commutator pulses by the control module in the actuator with 2-wire, while the actuator with 5-wire uses potentiometer feedback.

The A/C ECU is the Air Condition Engine Control Unit.

Answer:

power

Explanation:

Answer:

skip zone

Explanation:

Answer:

Explanation:

In order to find the mass of the football we use the formula

[tex]m = \frac{p}{v} \\ [/tex]

where

p is the momentum

v is the velocity

We have

[tex]m = \frac{630}{7} \\ [/tex]

We have the final answer as

Hope this helps you

Answer:

Explanation:

1) Since the bags hold three pineapples

2) we can also hold two pineapples in one bag.

Hope this helps! <3

Answer:

v = gt

Explanation:

From the question given, we obtained the following information:

Initial velocity (u) = 0 m/s

Acceleration due to gravity (g) = g

Time (t) = t

Final velocity (v) =.?

Thus, we can obtain the velocity as illustrated below:

v = u + gt

v = 0 + gt

v = gt

Thus, the equation for the velocity is

v = gt

Answer:

A proton and an electron have an equal amount but an opposite type of charge. Thus, if an atom contains equal numbers of protons and electrons, the atom is described as being electrically neutral

Answer:

Explanation:

Atoms are electrically neutral because they contain equal quantities of positively charged protons and negatively charged electrons. Electrons and protons have equal but opposite charges, so the result is no net charge. Ions are atoms that have gained or lost electrons. As a result, ions have a net charge.

Answer:

Explanation

Give the initial velocity of am object as v =(4m/s)xi+(3m/s)yj

From the expression;

Vy = 3m/s

Vx = 4m/s

At the maximum height, the velocity of the body is zero i.e Vy = 0m/s

The velocity of the projectile as it reaches its highest point will be:

v = (4m/s)xi + 0

v = √4²+0²

v = √16

v = 4m/s

Hence he velocity of the projectile when it reaches its highest point is 4m/s

Answer:

Pressure

Explanation:

the answer is pressure

Answer:

9,200 m

Explanation:

1 kilometer = 1000 meters so if there is 9 kilometers then it is 9000 meters, then .2 kilometer is equal to 200 meters. Add the numbers together to get 9,200 meters

Answer:

Most likely it will reach 29.4 up in the air before coming back down.

Explanation:

The force of the ball will be the same on how high it will go.

Answer:

isn't it the first one

Answer:

The object in figure C is a planet, so it is the largest object. Planets are larger than comets and asteroids.

Explanation:

Answer:

Assuming rightward is positive, the velocity is positive whenever the car is moving to the right, and the velocity is negative whenever the car is moving to the left. The acceleration points in the same direction as the velocity if the car is speeding up, and in the opposite direction if the car is slowing down.

Explanation:

Answer:

Nuclear energy

Explanation:

Answer:

Maximum Altitude: vi = 250 m/s At the maximum height q = 35° vy,f = vy,i − g∆t = 0 g = 9.81 m/s2 vy,i = vi (sin q) = g∆t ∆t =  vi (si g n q)  =  (250 9 m .8 / 1 s) m (s / i s n 2  35°) ∆t = 15 s

Vertical Velocity: Vyf = 439.09

Explanation:

The time it will take to reach its maximum altitude will be 14.63 seconds, and the final vertical velocity will be 143.4 m/s.

Velocity is the pace and direction of an object's movement, whereas speed is the time rate at which an object is travelling along a path. In other words, speed is a scalar value, but velocity is a vector.

The velocity at time t = 0 is known as the initial velocity (u). It is the rate at which motion initially manifests itself.

On the other hand, the final velocity is a vector number that represents the speed and direction of a moving body after it has experienced its maximum acceleration.

According to the question, the given values are :

Angle, θ = 35°

V₀ = 250 m/s

[tex]V_o_y=V_osin\theta[/tex]

[tex]V_o_y[/tex] = (250)(sin 35°)

= 250 × 0.573

[tex]V_o_y[/tex] = 143.4 m/s.

Now, the time it will take to reach its maximum height will be :

[tex]t_m_a_x=V_o_y/g[/tex]

= 143.4 / 9.8

[tex]t_m_a_x[/tex]= 14.63 seconds.

Hence, the time it will take to reach its maximum altitude is 14.63 seconds.

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Answer:

Yes, it will be a Home Run

Explanation:

(Note : It is assumed that the collision between bat and ball is perfectly elastic.)

( Also I don't know anything about baseball, so I checked the dimensions online, which are minimum 325 ft (left and right field foul pole) and minimum 400 ft centre field fence)).

STEP 1

Find Horizontal Range of Projectile

[tex]R = \frac{ {u}^{2} \sin(2 \alpha ) }{g} = \frac{(49.1)^{2} \sin(44°) }{g}[/tex]

[tex]R = 170.8 \: m \: = 560.3 \: ft[/tex]

Therefore, the ball will travel 560.3 ft horizontally well beyond 400 ft (largest dimension of the field), and it'll be a Home Run.

Answer:

He will have to use two batteries instead of just one.

Explanation:

The way Brady could increase the strength of his electromagnet and pick up more thumbtacks is for him to increase the current. He can achieve this either by adding a second battery or by adding more coils of wire.

This is because using 2 batteries will make the amount of current in the coils to increase and this will in turn produce a higher electromagnetic field in the nail.

Answer:

2991.47 [cm^2]

Explanation:

To solve this problem we must perform a dimensional analysis and use the corresponding conversion values:

[tex]3.22[ft^{2}]*\frac{12^{2}in^{2} }{1^{2}ft^{2}} *\frac{2.54^{2}cm^{2} }{1^{2}in^{2} } \\2991.47[cm^{2}][/tex]

Answer:

1. 6 m/s.

2. 320 miles.

Explanation:

1. Determination of the average speed.

Total distance travelled (D) = 24 m

Total time (t) = 4 s

Average speed =.?

Average speed is simply defined:

Average speed = Total distance /total time

Average speed = 24/4

Average speed = 6 m/s

2. Determination of the distance travelled by the train.

Speed = 40 mph

Time = 8 h

Distance =?

Speed is simply defined as:

Speed = Distance /time

40 = Distance / 8

Cross multiply

Distance = 40 × 8

Distance = 320 miles

Therefore, the train travels a distance of 320 miles.

Answer:

B

Explanation:

Answer:

0.43 seconds

Explanation:

Answer:

Initial velocity is independent of the slope of the graph; that is, the acceleration. An object thrown downward still accelerates after release at the same rate as an object that is dropped.