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3 years ago

True or false? A tide with the least distance between low and high tides is called a neap tide.

Physics

2 answers:

lord [1]3 years ago

7 0

the only logical answer is true

aksik [14]3 years ago

6 0

The answer is True. Neap tides are when there is the least distance between low and high tides.

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A ball is kicked from the top of a building with a velocity of 50 m/s and lands 165 m away from the base of the building.

Nadusha1986 [10]

The height of the building is 53.4 m (projectile motion)

Explanation:

The motion of the ball is a projectile motion, so it follows a parabolic path which consists of two independent motions:

- A uniform motion (constant velocity) along the horizontal direction

- An accelerated motion with constant acceleration (acceleration of gravity) in the vertical direction

First of all, we consider the horizontal motion, which is a uniform motion at constant speed. The equation that gives the horizontal distance travelled is:

$d=v_x t$

where:

$v_x = 50 m/s$ is the horizontal velocity of the ball, which is constant since there are no forces in this direction

d = 165 m is the horizontal distance travelled by the ball

Solving for t, we find the time of flight:

$t=\frac{d}{v_x}=\frac{165}{50}=3.3 s$

Now we analyze the vertical motion: it is an accelerated motion, we can use the suvat equation

$s=ut+\frac{1}{2}at^2$

where

s is the vertical displacement, which is the height of the building

u = 0 is the initial vertical velocity of the ball

t = 3.3 s is the time of flight

$a=g=9.8 m/s^2$ is the acceleration of gravity

Solving for s, we find the height of the building:

$s=0+\frac{1}{2}(9.8)(3.3)^2=53.4 m$

Learn more about projectile motion here:

brainly.com/question/8751410

#LearnwithBrainly

6 0

3 years ago

Find the total power developed in the circuit. Express your answer using three significant figures and include the appropriate u

BabaBlast [244]

Answer:

37 W

Explanation:

Power is the time rate of dissipation or absorbing energy. The power supplied or absorbed by an element is the product of the current flowing through the element and the voltage across the element. Power is measured in watts. If the power is positive then it is absorbed by the element and if it is negative then it is supplied by the element.

Power = voltage * current

For element A: Power = 36 V * -4 A = -144 W

For element B: Power = -20 V * -4 A = 80 W

For element C: Power = -24 V * 4 A = -94 W

For element D: Power = -80 V * -1.5 A = 120 W

For element E: Power = 30 V * 2.5 A = 75 W

The total power developed in the circuit = sum of power through the element = (-144 W) + 80 W + (-94 W) + 120 W + 75 W = 37 W

6 0

2 years ago

1. A fluid with viscosity 1.2 Pa s moves through a 200-m-long pipe with a 20 cm diameter. What difference in pressure between th

Helen [10]

(1) The difference in pressure between the ends of the pipe is 611 kPa.

(2) The Reynold's number for this torpedo is 1.2 x 10⁷.

(3) The flow of water around the torpedo is turbulent.

<h3>Difference in pressure between the ends of the pipe</h3>

The difference in pressure is calculated by applying Poiseuille formula.

$V = \frac{\pi \Delta P r^4 t}{8\eta L} \\\\\frac{V}{t} = \frac{\pi \Delta P r^4 }{8\eta L}\\\\Q = \frac{\pi \Delta P r^4 }{8\eta L}$

where;

Q is flow rate
r is radius of the pipe
L is length of the pipe
η is viscosity
ΔP is change in pressure

$\Delta P = \frac{8Q\eta L}{\pi r^4}$

$\Delta P = \frac{8(0.1)(1.2)(200)}{\pi (0.1)^4} \\\\\Delta P = 611,155 \ Pa\\\\\Delta P \approx 611 \ kPa$

<h3>Reynold's number for the torpedo</h3>

$Re = \frac{Vl \rho }{\mu} \\\\Re = \frac{(10)(1.2)(1000)}{1 \times 10^{-3}} \\\\Re = 1.2 \times 10^7$

<h3>Laminar or turbulent flow </h3>

A flow is considered laminar if the Reynolds number is up to 2300.
A flow is considered turbulent if the Reynolds number is greater than 3500.

The calculated Reynold's number (1.2 x 10⁷) is greater than 3500. Thus, the flow is turbulent.

Learn more about turbulent flow here: brainly.com/question/12081428

#SPJ1

8 0

2 years ago

Augie created this chart about the two kinds of waves. Which best labels the chart? Title 1 is "Longitudinal Waves," and Title 2

PIT_PIT [208]

Answer:

Explanation:

There are three types of waves mainly.

1. Mechanical waves : Which needs a medium for there propagation. For example, sound waves

2. Non mechanical waves : Which do not need a medium or their propagation.

for example, light waves

3. Electromagnetic waves : Which are produced due to the interaction of electric and magnetic field. for example, X rays, light waves

The wave motion are of two types.

1. Transverse wave motion

2. Longitudinal wave motion

3 0

3 years ago

Read 2 more answers

HELP ASAP!!!! Ashley and Rachel are driving bumper cars. Ashley's bumper car is moving and she collides with Rachel bumper car,

stellarik [79]

Answer:

Rachels car moves and ashleys stops

Explanation:

4 0

3 years ago