Which one? A? B? C? D?

Blake is setting up his tent at a renaissance fair. If the tent is 8 feet tall and the tether can be staked no more than 2 feet

Mariana [72]

The stake, height and tether length of the tent form a right angle triangle where the tether length is the hypotenuse.
Applying Pythagoras theorem:
length² = height² + (stake distance)²
length = √(8² + 2²)
length = 8.5 feet

3 0

2 years ago

Please HEEEEELPPPP !!!!!

stepladder [879]

When you rub a balloon on a sweater, for example, some electrons come off and end up on the balloon. The fibers have lost electrons giving them a positive charge. The rubber gained electrons giving it a negative charge. ... The positively charged fibers are now attracted to the negatively charged balloon.

5 0

2 years ago

Scientists have documented that the current level of carbon dioxide in the atmosphere is _________

Leni [432]

<span>Scientists have documented that the current level of carbon dioxide in the atmosphere is increasing.</span>

7 0

3 years ago

When given a compound, adding up all of the _______ of all of the individual atoms within one molecule of a compound will determ

butalik [34]

Atomic masses should be about right

4 0

3 years ago

Read 2 more answers

A playground merry-go-round has radius 2.10m and moment of inertia 2500kg*m^2 about a vertical axle through its center, and it t

vladimir2022 [97]

Answer

Radius of the wheel r = 2.1 m

Moment of inertia I = 2500 Kg m²

Tangential force applied F = 18 N

Time interval t = 16 s

Initial angular speed ω1 = 0

Final angular speed ω2 = ?

Let α be the angular acceleration.

Torque applied τ = Iα

F r = Iα

Angular acceleration α = F r/I

= $\dfrac{18\times 2.1}{2500}$

= 0.015 rad/s²

(a)From rotational kinematic relation

Final angular speed ω₂ = ω₁ + αt

= 0 + (0.015 rad/s^2 * 16 s)

= 0.24 rad/s

(b) Work done W = 0.5 Iω₂² - (1/2)Iω₁²

= 0.5*( 2500 Kg m²)(0.24 rad/s)^2 - 0

= 72 J

(c) Average power supplied by the child P = W/t = $\dfrac{72}{16}$

= 4.5 watt

8 0

3 years ago