3 years ago

What is the value of x in the expression: x = p(p+q) + 4 if p = -2 and q = 7

Physics

1 answer:

Troyanec [42]3 years ago

3 0

-2(-2+7) +4 is how you would set it up

(4+(-14) + 4

-10 + 4 = -6

x = -6

The final answer you should get is -6

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A Ferris wheel with a radius of 9.8 m rotates at a constant rate, completing one revolution every 37 s. Suppose the Ferris wheel

scoundrel [369]

Answer:

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3 years ago

05 kg bird is traveling 6 m/s. What is the kinetic energy (J) of the bird? (Your ANSWER should include all decimal places) Pleas

Virty [35]

Answer:

The value is $KE = 9 J$

Explanation:

From the question we are told that

The mass is $m = 0.5 \ kg$

The velocity is $v = 6 \ m/s$

Generally the kinetic energy is mathematically represented as

$KE = \frac{ 1}{2} * m*v^2$

=> $KE = \frac{ 1}{2} * 0.5*6^2$

=> $KE = 9 J$

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3 years ago

Left arm has area 10.0 cm2, right has area 5.00 cm2. 100 g of water isadded to right side. a) Determine the length of the water

Masja [62]

Answer:

0.49 cm

Explanation:

We are given that

$A_1=10 cm^2$

$A_2=5 cm^2$

Mass of water,m=100 g

a. $\rho_w=1 g/cm^3$

Volume, $V=\frac{mass}{density}=\frac{100}{1}=100 cm^3$

Length of water column in the right arm= $L=\frac{V}{A_2}=\frac{100}{5}=20 cm$

b. $\rho_m=13.6 g/cm^3$

In equilibrium condition

Pressure at point A=Pressure at point B

$P+\rho_mg(h+h_2)=P+\rho_wgL$

$hA_1=h_2A_2$

$h_2=\frac{hA_1}{A_2}$

$13.6\times 9.8(h+h(\frac{A_1}{A_2}))=1\times 9.8\times 20$

$13.6\times h(\frac{A_2+A_1}{A_2})=20$

$h=\frac{20A_2}{13.6(A_2+A_1)}$

$h=\frac{20\times 5}{13.6\times (10+5)}=0.49 cm$

4 0

4 years ago

A manufacturer of chocolate chips would like to know whether its bag filling machine works correctly at the 420 gram setting. It

natta225 [31]

Answer:

P-value of the test statistic is 2.499

Explanation:

given data:

size sample is 24

sample mean is 414 gm

standard deviation is 15

Null hypotheis is

$H_0: \mu = 420 gm$

$H_1 \mu< 420$

level of significance is 0.01

from test statics

$t = \frac{\hat x - \mu}{\frac{s}{\sqrt{n}}}$

degree od freedom is = n -1

df = 24 -1 = 13

$t = \frac{414 - 420}{\frac{15}{\sqrt{24}}}$

t = -1.959

from t table critical value of t at 0.1 significane level and 23 degree of freedom is 2.499

8 0

3 years ago

20 POINTSSS!!!!!!!!

Soloha48 [4]

Answer: A
Hope this help you!!

7 0

3 years ago