Pader6u
2022-08-08
Answered

Marble Samples, if the bag contain 3 yellow, 4 white, and 8 blue marbles, how many sample of 2 can be drawn in which both marbles are blue?

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Deja Navarro

Answered 2022-08-09
Author has **17** answers

8C2=28

nPr(8,2)=56

nPr(8,2)=56

asked 2020-12-30

A majorette in a parade is performing some acrobatic twirlingsof her baton. Assume that the baton is a uniform rod of mass 0.120 kg and length 80.0 cm.

With a skillful move, the majorette changes the rotation ofher baton so that now it is spinning about an axis passing throughits end at the same angular velocity 3.00 rad/s as before. What is the new angularmomentum of the rod?

asked 2022-09-01

Monthly normal rainfall data (x , y) for a particular city are (2 , 6.68), (6 , 1.66), (8 , 2.83), where x represents time in months (with x = 1 representing January) and y represents rainfall in inches. Find the values of a, b, and c such that the equation y = ax^2 + bx + c models this data. According to the model, how much rain should the city expect during September?

asked 2022-08-20

The formula for percent difference is: $\text{\% Difference}=\frac{|{E}_{1}-{E}_{2}|}{\frac{1}{2}({E}_{1}+{E}_{2})}\cdot 100$

Find the percent difference between these 2 values.

Value 1=1.0013 bars

Value 2=0.04955 bars

Find the percent difference between these 2 values.

Value 1=1.0013 bars

Value 2=0.04955 bars

asked 2022-08-16

Why center of mass constant is zero?

$\begin{array}{}\text{(1)}& {\overrightarrow{P}}^{\prime}=\sum ({m}_{i}{\overrightarrow{v}}_{i}^{\prime})=\sum {\textstyle [}{m}_{i}({\overrightarrow{v}}_{i}-\overrightarrow{u}){\textstyle ]}=\overrightarrow{P}-M\overrightarrow{u}=0\end{array}$

$\begin{array}{}\text{(1)}& {\overrightarrow{P}}^{\prime}=\sum ({m}_{i}{\overrightarrow{v}}_{i}^{\prime})=\sum {\textstyle [}{m}_{i}({\overrightarrow{v}}_{i}-\overrightarrow{u}){\textstyle ]}=\overrightarrow{P}-M\overrightarrow{u}=0\end{array}$

asked 2020-11-09

A 0.30kg softball has a velocity of 15m/s at anangle of 35 degree below the horizontal just before making contactwith the bat. What is the magnitude of the change in momentum ofthe ball while it is in contact with the bat if the ball leaves thebat with a velocity of (a) 20m/s, velocity downward, and (b) 20m/s, horizontally back toward the pitcher?

a) $\pi =0.3kg(-15\frac{m}{s})\mathrm{cos}\left(35\right)i$

b) $\pi =0.3\cdot 20\frac{m}{s}=6\frac{m}{s}$

Ive

asked 2022-06-09

-A noisy grinding machine in a factory produces a sound intensity of 1.00 * 10 ^ 5 * W / m2. Calculator (a) the decibel level of this machine, and (b) the new intensity level when a second, identical machine is added to the factory.

asked 2021-04-04

Water at a pressure of $3.00\times {10}^{5}$ Pa flows through a horizontal pipe at a speed of 1.00 m/s. the pipe narrows to 1/4 its original diameter. Find the following:

A. The flow speed in the narrow section

B. the pressure in the narrow section