which of these is a logical hypothesis regarding mass and period​

Explanation:

u=54 km/h

54*5/18=15 m/s

v=0m/s

t=?

acceleration=-0.5m/s^2

we know that a=v-u/t

so,

t=v-u/a

t=15-0/0.5

=15/0.5

=30

therefore, the time is 30 second

Hope this answer helps you..

Answer:

10

Explanation:

Acceleration = Force / Mass

500 N / 50 Kg =  10

Answer:

Average speed of the car is 36.36 miles per hour

Explanation:

It is given that,

Total distance traveled by the car, d = 200 miles

Total time taken, t = 5.5 hours

In this case, we have to find the average speed of the car. Average speed of the car is defined as the total distance divided by total time taken. Mathematically, it can be written as :

s = 36.36 miles per hour

Hence, the average speed of the car is 36.36 miles per hour.  \

Explanation:

A fixed point is a point x such that. f(x) = x . Graphically, these are exactly those points where the graph of f, whose equation.

Answer:

a fix joint is a point x such that.f (x) = x.

Explanation:

Graphically, these are execty those point where the graph of f, whose equation.

Answer:

1. Osteoporosis

2. Dehydration

3. Atherosclerosis

4. Aerobic exercise

5. Heart disease, obesity, diabetes and high blood pressure

6. Coronary heart disease, colorectal cancer, diabetes

Explanation:

1. Osteoporosis is the condition of the bones when they become easily fractured and less dense, such that injuries to the bones are likely to cause disability or pain

2. The bod becomes dehydrated in the event that there is insufficient water for proper functioning of the organs due to the loss of more water than the water that is taken in or absorbed.

3. Atherosclerosis is the building of plaque on the inside and outside of the walls of the arteries by cholesterol, fat, and other compounds in the blood often being taken as a problem or undesirable condition of the heart.

4. Processed foods are those that contain chemicals (that give them a good taste) in proportions that can cause illnesses

5. Taking large quantities of (red) meat such as burgers, or barbecued red meat,  can lead to type 2 diabetes, cancers and stroke

Answer:

1 inch = 2.54 cm

12.9 inches= 12.9 x 2.54

= 32.766

= 32.8 cm (approximately)

Hope it helps...

Answer:

B) I just solved it

Explanation:

The acceleration of the object is determined as -2.5 m/s².

Acceleration is the rate of change of velocity with time.

Mathematically, acceleration is given as;

a = Δv/Δt

a = (v₂ - v₁)/(t₂ - t₁)

where;

From the graph;

the initial velocity = 40 m/s

the final velocity = 10 m/s

the final time = 12 seconds

the initial time = 0 second

acceleration = (10 - 40) / (12 - 0)

acceleration = -30/12

acceleration = -2.5 m/s²

Thus, the acceleration of the object is determined as -2.5 m/s².

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#SPJ1

Answer:

Being attentive is the best way to demonstrate respect.

Explanation:

Explanation:

electricity created at peak........

Answer:

There will be two forces acting on her: Gravitational force and Air resisitence

Answer:

6) 2.6 m/s, 31°

7) 9.2 m/s

8) 1.2 s

Explanation:

I'll do #6, #7, and #8 as examples.  You can solve #9 using the equation from #7, and #10 using the equation from #8.

6) Take north to be +y and east to be +x.

Given:

vₓ = 2.2 m/s

vᵧ =  1.3 m/s

Find: v

v² = vₓ² + vᵧ²

v² = (2.2 m/s)² + (1.3 m/s)²

v ≈ 2.6 m/s

θ = atan(vᵧ / vₓ)

θ = atan(1.3 / 2.2)

θ ≈ 31°

7) Given:

Δy = -4.3 m

v₀ = 0 m/s

a = -9.8 m/s²

Find: v

v² = v₀² + 2aΔy

v² = (0 m/s)² + 2 (-9.8 m/s²) (-4.3 m)

v ≈ 9.2 m/s

8) Given:

Δy = -6.7 m

v₀ = 0 m/s

a = -9.8 m/s²

Find: t

Δy = v₀ t + ½ at²

-6.7 m = (0 m/s) t + ½ (-9.8 m/s²) t²

t = 1.2 s

Answer:

1. Can change the state of an object(rest to motion/ motion to rest)

2. May change the speed of an object if it is already moving.

3. May change the direction of motion of an object.

Explanation: A force acting on an object causes the object to change its shape or size, to start moving, to stop moving, to accelerate or decelerate.

Answer:

550 meters west

Explanation:

Givens: Inital velocity/vi= 5.0m/s, time/t=60.0s, acceleration/a= 0 because a constant velocity means 0 acceleration, inital position/xi=250m

Unknown: final position/xf=?

Formula: xf=xi+vi(t)+1/2at^2

xf=250m+5.0m/s(60.0s)+1/2(0)(60.0s)^2

xf=250m+300m

xf=550m west

its still west because he never chhanged direction therefore his postion kept increasing.

Answer:

8.042m

Explanation:

Ep = mgh

given that ,

m = 110.8kg

h =?

g = 9.81 m/s^2

Ep= 8741J

8741= 110.8 × 9.81 × h

h= 8741 ÷ ( 110.8 × 9.81 )

h = 8.042m

Answer:

F = 48 [N]

Explanation:

To solve this problem we must use Newton's third law, which tells us that the sum of forces on a body must be equal to zero, that is, the body is in static equilibrium or in equilibrium.

ΣF = 0

24 + 24 - F = 0

F = 24 + 24

F = 48 [N]

Note: Jeff's force should be equal to the sum of Sally and Misha's forces, but in the opposite direction.

Answer:

Absolute strength = 1.25

Explanation:

Given:

Body weight of body = 120 lbs

Body weight of thing = 150 lbs

Find:

Absolute strength

Computation:

Absolute strength = Body weight of thing / Body weight of body

Absolute strength = 150 / 120

Absolute strength = 1.25

Answer:

kinetic

Explanation:

Answer:

Baseballs pitched by a machine have a horizontal velocity of 30 meters/second. The machine accelerates the baseball from 0 meters/second to 30 meters/second in 0.5 seconds. If a baseball has a mass of 0.15 kilograms, the force the machine exerts its newtons.

Answer

:Fold mountains are often associated with continental crust. They are created at convergent plate boundaries, sometimes called continental collision zones or compression zones. Convergent plate boundaries are sites of collisions, where tectonic plates crash into each other.

The answer would be true

Answer:

The time it will take the bomb to reach the target is approximately 2.402 seconds

Explanation:

The given information are;

The direction the bomber is travelling = 45° below the horizontal

The speed at which the bomber was travelling = 320 m/s

The elevation at which the bomber releases its load = 600 m

Therefore, we have;

The height at which the bomb is released, s = 600 m

The inclination of the direction of motion of the bomb = 45° below the horizontal

The magnitude of the velocity of the bomb at release = 320 m/s

The vertical component of the velocity = 320 m/s × sin(45°) = 160·√2 m/s

Therefore, the initial vertical velocity, [tex]u_v[/tex], of the bomb = 160·√2 m/s downwards

From the equation of motion, we have;

s = [tex]u_v[/tex] × t + 1/2 × g × t²

Where;

t = The time it takes the bomb to hit the target

g = The acceleration due to gravity = 9.81 m/s²

∴ 600 = 160·√2 × t + 9.81 × t²

9.81 × t² + 160·√2 × t - 600 = 0

By the quadratic formula, we have;

[tex]x = \dfrac{-b\pm \sqrt{b^{2}-4\cdot a\cdot c}}{2\cdot a}[/tex]

[tex]t = \dfrac{-160 \times \sqrt{2} \pm \sqrt{(160 \times \sqrt{2} )^{2}-4\times 9.81\times (-600)}}{2\times 9.81}[/tex]

t ≈ -25.467 seconds or t ≈ 2.402 seconds

Given that t is a natural number, we have the correct option is t ≈ 2.402 seconds

Therefore, the time it will take the bomb to reach the target ≈ 2.402 seconds.

Answer:

The answer is 20 miles/hr

Explanation:

Answer:

ok is this a question? if so i can edit my answer

Explanation:

Answer:

The value is [tex]t = 5.15 \ seconds [/tex]

Explanation:

From the question we are told that

   The  angle is  [tex]\theta  =  75^o[/tex]

   The speed is  [tex]v  =  9.92 \  m/s[/tex]

The  time taken is mathematically represented as

     [tex]t =  \frac{ 2 * v * sin (\theta )}{ g}[/tex]

=>    [tex]t =  \frac{ 2 *9.92 * sin (75 )}{ 9.8}[/tex]

=>    [tex]t = 5.15 \ seconds [/tex]

Time = (distance) / (speed)

Time = (26 meters) / (8 meters/hour)

Time = 3.25 hours or 3 hours 15 minutes

Answer:

Explanation:

Since the roundabout is rotating with uniform velocity ,

input power = frictional power

frictional power = 2.5 kW

frictional torque x angular velocity = 2.5 kW

frictional torque x .47 = 2.5 kW

frictional torque = 2.5 / .47 kN .m

= 5.32 kN . m

= 5 kN.m

b )

When power is switched off , it will decelerate because of frictional torque .

Answer:

The distance separating the two particles when the moving particle is momentarily stopped is 0.947 m

Explanation:

Given that,

First charge = 40 μC

Second charge = 80 μC

Distance between the two particles = 2.0 m

Kinetic energy = 16 J

We need to calculate the distance separating the two particles when the moving particle is momentarily stopped

Using conservation of energy

[tex]K.E+\dfrac{kq_{1}q_{2}}{d}=\dfrac{kq_{1}q_{2}}{x}+K.E[/tex]

Put the value into the formula

[tex]16+\dfrac{9\times10^{9}\times40\times10^{-6}\times80\times10^{-6}}{2}=\dfrac{9\times10^{9}\times40\times10^{-6}\times80\times10^{-6}}{x}+0[/tex]

[tex]16+14.4=\dfrac{28.8}{x}[/tex]

[tex]30.4x=28.8[/tex]

[tex]x=\dfrac{28.8}{30.4}[/tex]

[tex]x=0.947\ m[/tex]

Hence, The distance separating the two particles when the moving particle is momentarily stopped is 0.947 m

The distance separating the two particles when the moving particle is momentarily stopped is 0.947 m.

The given parameters;

The kinetic energy is zero at the instant the moving particle is momentarily stopped.

The distance separating the two particles when the moving particle is momentarily stopped is calculated as follows;

[tex]K.E_1 \ + W_1 = K.E_2 + W_2\\\\K.E_1 + \frac{kq_1q_2}{x_1} = K.E_2 + \frac{kq_1q_2}{x_2} \\\\16 \ + \ \frac{(9\times 10^9)\times (40\times 10^{-6})\times (80\times 10^{-6})}{2} = 0 \ + \ \frac{(9\times 10^9)\times (40\times 10^{-6})\times (80\times 10^{-6})}{x_2} \\\\30.4= \frac{28.8}{x_2} \\\\x_2 = \frac{28.8}{30.4} \\\\x_2 = 0.947 \ m[/tex]

Thus, the distance separating the two particles when the moving particle is momentarily stopped is 0.947 m.

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Answer:

No.

Explanation:

Because the acceleration of falling objects is constant and is not affected by mass

Answer: no

The acceleration of an object is equivalent to the gravitational acceleration. The size, shape, and weight of an item are not a cause in the motion of the object. So all objects, regardless of its mass, size, or shape fall freely with the same acceleration.

Answer:

Judging from the number of stars large enough to produce such black holes, however, scientists estimate that there are as many as ten million to a billion such black holes in the Milky Way alone.

Explanation:

Answer:

14.49 N

Explanation:

East component (x component)

=15 m * cos 15°

=14.49N