Gregory Emery
2021-12-18
Answered

The ratio of oxygen to carbon by mass in carbon monoxide is $1.33\xf71.00$ . Find the formula of an oxide of carbon in which the ratio by mass of oxygen to carbon is $2.00\xf71.00$ .

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asked 2020-11-22

The specific heat of lead is 0.030 cal/g.C. 300 grams of leadshot at 100C is mixed with 100 grams of water at 70C in an insulated container. The final temperature of the mixture is:

A) 100C

b) 85.5C

c)79.5C

d) 74.5C

e)72.5C

A) 100C

b) 85.5C

c)79.5C

d) 74.5C

e)72.5C

asked 2021-04-21

The arm weighs 44.0 N. The force of gravity acting on the arm acts through point A. Determine the magnitudes of the tension force t in the deltoid muscle and the force s of the shoulder on the humerus (upper-arm bone) to hold the arm in the position shown.

t=N

s=N

t=N

s=N

asked 2020-11-01

As part of your work out, you lie on your back and push with your feet against a platform attached to two stiff springs arranged side by side so that they are parallel to each other. when u push the platform, you compress the springs. You do 80.0G of work when u compress the springs 0.200m from their uncompressed length.

a) What magnitude of force must u apply to hold the platform in this position?

b) How much additional work must you do to move the platform 0.200m farther, and what maximum force must you apply?

a) What magnitude of force must u apply to hold the platform in this position?

b) How much additional work must you do to move the platform 0.200m farther, and what maximum force must you apply?

asked 2020-11-23

Saturn has an equatorial radius of 6.00 107 mand a mass of 5.67 1026 kg.

(a) Compute the acceleration of gravity at the equatorof Saturn.

(b) What it the ratio of a person's weight on Saturn to that onEarth?

(a) Compute the acceleration of gravity at the equatorof Saturn.

(b) What it the ratio of a person's weight on Saturn to that onEarth?

asked 2021-12-15

Determine the internal energy change $\mathrm{\u25b3}u$ of hydrogen, in kJ/kg, as it is heated from 200 to 800 K, using (a) the empirical specific heat equation as a function of temperature (Table A-2c), (b) the $c}_{v$ value at the average temperature (Table A-2b), and (c) the $c}_{v$ value at room temperature (Table A-2a).

asked 2020-12-06

I need to know how to find the mass of magnesium ribbon in grams per meter.

The length of Magnesium ribbon is 4.48 cm

9.89 g Mg = 1 meter

I also need to know how to find the volume of hydrogen and water vapor collected.

The length of Magnesium ribbon is 4.48 cm

9.89 g Mg = 1 meter

I also need to know how to find the volume of hydrogen and water vapor collected.

asked 2021-12-18

Use the position function $s\left(t\right)=-16{t}^{2}+{v}_{0}t+{s}_{0}$ for free-falling objects. A silver dollar is dropped from the top of a building that is 1362 feet tall. (a) Determine the position and velocity functions for the coin. (b) Determine the average velocity on the interval [1, 2]. (c) Find the instantaneous velocities when $t=1\text{}{\textstyle \phantom{\rule{1em}{0ex}}}\text{and}{\textstyle \phantom{\rule{1em}{0ex}}}\text{}t=2$ . (d) Find the time required for the coin to reach ground level. (e) Find the velocity of the coin at impact.