A backyard swimming pool holds 165 cubic yards (yd3) of water. what is the weight of the water in pounds?

Keith_Richards [23]

<span>Product can be defined as a thing or person that is the result of an action or process</span>

5 0

4 years ago

A thin ring of radius 73 cm carries a positive charge of 610 nC uniformly distributed over it. A point charge q is placed at the

kow [346]

Answer:

q = - 93.334 nC

Explanation:

GIVEN DATA:

Radius of ring 73 cm

charge on ring 610 nC

ELECTRIC FIELD p FROM CENTRE IS AT 70 CM

E = 2000 N/C

Electric field due tor ring is guiven as

$E = \frac{KQx}{[x^2+ R^2]^{3/2}}$

$E = \frac{9\time 10^9 \times 610\times 10^[-9} 0.70}{(0.70^2 + 0.73^2)^{3/2}}$

E1 = 3714.672 N/C

electric field due to point charge q

$E =\frac[kq}{x^2}$

$E = \frac{9\times 10^9 \times q}{0.70^2}$

$E2 = 1.837\times 10^{10}\times q$

now the eelctric charge at point P is

E = E1 + E2 $2000 = 3714.672 + 1.837\times 10[10} \times q$

solving for q

q = - 93.334 nC

7 0

4 years ago

Which best describes a reference frame?

babymother [125]

By definition we have to:

A system or frame of reference are those conventions used by an observer (usually standing at a point on the ground) to be able to measure the position and other physical magnitudes such as speed and acceleration of one or several objects.

The numerical value of some magnitudes can also be relative to the reference system when we refer to the relative movement. There are always mathematical relationships between the observer and the relative magnitudes.

Answer:

C. a position from which something is observed

3 0

4 years ago

Read 2 more answers

The fastest pitched baseball was clocked at 47 m/s. Assume that the pitcher exerted his force (assumed to be horizontal and cons

Eduardwww [97]

Answer:

Following are the solution to the given points:

Explanation:

For point a:

Find the schematic of the empty body and in attachment. Upon on ball during the pitch only two forces act:

The strength of the pitcher F is applied that operates horizontally. Its gravity force acting on an object is termed weight, which value is where m denotes mass, and g the acceleration of gravity.

For point b:

$160.2\ N$

First, they must find that ball's acceleration. You can use the SUVAT equation to achieve that

where

$v = 47\ \frac{m}{s} \\\\u = 0 \\\\a =?\\\\d = 1.0 \ m \\\\$

Solving for a,

$a=\frac{v^2-u^2}{2d}=\frac{47^2-0}{2(1.0)}=1104.5 \ \frac{m}{s^2}$

Calculating the mass:

$m = 145 g = 0.145 kg$

Calculating the force:

$F=ma=0.145 \times 1104.5= 160.2 \ N$

For point c:

0.195 times the pitcher's weight

$m = 84 \ kg \\\\g = 9.8\ \frac{m}{s^2}\\\\$

Solving for W:

$W=84 \times 9.8= 823.2 \ N$

Now the force of Part B could be defined as the fraction of the mass of the pitcher:

$\frac{F}{W}=\frac{160.2}{823.3}=0.195$

4 0

3 years ago

Two campers in a national park hike from their cabin to the same spot on a lake, each taking a different path, as illustrated be

elixir [45]

Answer:

<em>Their displacement is 5 Km from the cabin.</em>

Explanation:

The displacement is define is the shortest distance between two points. It is the shortest distance of a line that joins two points together. It quantifies both the distance and direction of the net or total motion along a straight line from the initial position to the final position of the point trajectory. In this case, the straight line joining the cabin to the stream is line S which is equal to 5 Km

3 0

3 years ago