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3 years ago

4748.36242611007 round to the nearest tenth

Physics

1 answer:

Anit [1.1K]3 years ago

3 0

Answer:

4748.4

Explanation:

The first number after the decimal is the tenths place and when it says round it means look at the number after it and if it's above four then raise the tenths place by one.

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The moon's gravity is one-sixth that of the earth. what is the period of a 2.00m long pendulum on the moon

erik [133]

Answer:

6.96 s

Explanation:

The period of a simple pendulum is given by:

$T=2 \pi \sqrt{\frac{L}{g}}$

where

L is the length of the pendulum and g the acceleration due to gravity.

In this problem, we have a pendulum with length L = 2.00 m, while the acceleration due to gravity is 1/6 that of the earth:

$g' = \frac{g}{6}=\frac{9.8 m/s^2}{6}=1.63 m/s^2$

So, the period of the pendulum on the moon is

$T=2 \pi \sqrt{\frac{2.00 m}{1.63 m/s^2}}=6.96 s$

3 0

3 years ago

A ball is thrown vertically upward from the top of a building 112 feet tall with an initial velocity of 96 feet per second. The

nordsb [41]

Answer:

$t=6.96s$

Explanation:

From this exercise, our knowable variables are hight and initial velocity

$v_{oy}=96ft/s$

$y_{o}=112ft$

To find how much time does the ball strike the ground, we need to know that the final position of the ball is y=0ft

$y=y_{o}+v_{oy}t+\frac{1}{2}gt^{2}$

$0=112ft+(96ft/s)t-\frac{1}{2}(32.2ft/s^{2})t^{2}$

Solving for t using quadratic formula

$t=\frac{-b±\sqrt{b^{2}-4ac } }{2a}$

$a=-\frac{1}{2} (32.2)\\b=96\\c=112$

$t=-0.999s$ or $t=6.96s$

Since time can't be negative the answer is t=6.96s

7 0

3 years ago

In physics, Ohm's law says that current through a wire, I, is directly proportional to voltage, V, and inversely proportional to

jeka94

Due to Ohm's law, I is proportional to V and 1/R:

I ∝ V

I ∝ 1/R

R is proportional to the wire length L:

R ∝ L

Therefore I is also proportional to 1/L:

I ∝ 1/L

Calculate the scale factor due to increased voltage:

k₁ = 24/12 = 2

Calculate the scale factor due to decreased wire length:

k₂ = 1/(0.5/1) = 2

Multiply the original current by the scale factors to get the new current:

I = I₀k₁k₂

I₀ = 100mA, k₁ = 2, k₂ = 2

I = 100(2)(2)

I = 400mA

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3 years ago

What do deltas and natural levees have in common?

Tpy6a [65]

They are both formed by deposited river sediment.

7 0

3 years ago

Which compound uses the oxidation numbers to write the chemical formula?

pantera1 [17]

Inorganic chemical compounds

Explanation:

Inorganic chemical compounds employ the use of oxidation numbers of atoms to write their chemical formula.

The oxidation number is the formal charge assigned assigned to an atom present in a molecule or formula unit or ion based on some rules.
Knowledge of this number is used in writing the formulae of inorganic compounds.
These compounds forms by the exchange of certain small whole numbers by atoms or groups of atoms.
The combining power usually correspond to the number of electrons usually lost or gained or shared by atoms of elements during chemical combinations or the number of positive or negative charges carried by ions.

For example:

A B

combining power(Valency): X Y

Exchange of valencies Y X

Molecular formula of compound A $_{y}$ Bₓ

Learn more:

Compounds brainly.com/question/5961886

#learnwithbrainly

5 0

3 years ago