 Lv 1169 points

Questions20
• ### Use a finite approximation to estimate the area under the graph ?

I have no clue how to go about questions 12 and 13 any steps would be much apppreciated!

Mathematics5 months ago
• ### Using the ideal gas law, Calculate the ideal volume ?

Data table:

Mass of M: 0.03

Theoretical moles H2: 1.23*10^-3

Volume (ml): 27.8ml

Temp in Kelvins: 295.95

Temp in Celsius: 23

Pressure by H2 (atm): 1atm

Pressure H2: 0.0278

questions are attached below I’m not sure how to go about doing questions 2,3, & Conculsion 1

Chemistry8 months ago
• ### It takes 799 Joules of work to compress 0.301 moles of an ideal gas from volume 11.7m3 to ?

It takes 799 Joules of work to compress 0.301 moles of an ideal gas from volume 11.7m3 to volume 4.79m3 at a constant temperature.  What is the temperature of the gas in Kelvins?

Assume 3 significant digits.

• ### 7.11 grams of ice at -13oC are placed in a pot (with a lid) on the stove and heated for 8.94 minutes until it becomes steam at 118oC.   ?

7.11 grams of ice at -13 degrees Celcius are placed in a pot (with a lid) on the stove and heated for 8.94 minutes until it becomes steam at 118 degrees Celcius. How many Watts of power did the stove provide if there were no heat losses?

Assume 3 significant digits.

• ### The radius of a water pipe is 14.4cm.  How fast ?

A. The radius of a water pipe is 14.4cm.  How fast does the water flow in the pipe if the flow rate is Q = 396 L/min?

Assume 3 significant digits and MKS units of m/s.

B. A swimmer is at the bottom of a 3.99 meter deep pool that is filled with water.  What is the force exerted on an eardrum if the area of the eardrum is 58.1 mm2?

Assume 3 significant digits and units of Newtons.

• ### Suppose you exert an upward force Fi to the handles of a wheelbarrow at a distance of li = 1.84 m?

Suppose you exert an upward force Fi to the handles of a wheelbarrow at a distance of li = 1.84 m to the left of the contact point between the wheel and the ground as shown in the figure below.  The center of gravity of the loaded wheelbarrow is located at a distance of lo = 8.82 cm to the left of the contact point between the wheel and the ground.

What upward force Fi must you exert to support the wheelbarrow and its load if their combined mass is 103 kg?  Assume 3 significant digits in your answer and assume units of Newtons.

• ### Intravenous infusions are usually made with the help of the gravitational force. ?

Intravenous infusions are usually made with the help of the gravitational force. Assuming that the density of the fluid being administered is 1.46 g/mL, at what minimum height should the IV bag be placed above the entry point so that the fluid just enters the vein if the blood pressure in the vein is 105 mm Hg above atmospheric pressure?

Assume 3 significant digits and units of meters.  Patm = 1.01x105 Pa = 760 mm Hg

Physics10 months ago
• ### A neutron star with a radius of 47.1 km is rotating with a period of 8.66 ms?

A neutron star with a radius of 47.1 km is rotating with a period of 8.66 ms.  The neutron star collapses radially under its own weight until it reaches a new radius of 18.3 km.

You can approximate the neutron star as a uniform solid sphere with a shrinking radius and a constant mass during this process.

What is the v/c = the ratio of the tangential speed on the equator of the neutron star to the speed of light?

Use c = 3.00x108 m/s and assume 3 significant digits in your answer.

• ### It should be no surprise that chalk is actually a mixture ?

It should be no surprise that chalk is actually a mixture and is full of impurities. If your stick of chalk is actually 79.8% gypsum, 12.7% calcium carbonate, and 7.5% other materials, what would be the number of calcium atoms?

• ### A bowling ball with a mass of 3.21 kg and a radius of 11.5cm is released at ground level with an initial speed of 1.29m?

• ### 10. Four forces act on a system as shown below in the figure.  What is the torque in N-m exerted on the system relative to the ?

• ### 7. A pendulum consists of a rod of mass 2 kg and length 1 m with a solid sphere at one end with mass 0.3 kg and radius 20 cm.?

Physics11 months ago
• ### Suppose you have two masses, M and m, separated by a distance R.  ?

Suppose you have two masses, M and m, separated by a distance R.  Suppose you made the mass M 18.5 times bigger and you made the distance r 6.3 times smaller.   The force would then be _____  bigger.   (Assume standard notation and three significant digits in your answer).

• ### A black hole with a mass of 50 solar masses ?

A black hole with a mass of 50 solar masses has a Schwarszchild Radius of ______ km.  Assume 3 significant digits and do not use scientific notion

4 AnswersAstronomy & Space11 months ago
• ### Suppose a comet has an average orbital radius of 41.6 AU.       ?

Suppose a comet has an average orbital radius of 41.6 AU.   What is the period of the orbit in years?  Assume standard notation and three significant digits in your answer.

• ### How do i solve for tension on T1 and T2? ?

Also...how do I set up the formulas correctly to solve this?

• ### Physics .... A particle moves along?

A p0tarticle moves along a path that varies in time according to the following:

x(t)=(10+15.0t^2-25.0t^3)m and y(t)=(15.0+10.t-5.00t^2)m

What is the magnitude of acceleration at t=3.00s

• ### GENETICS QUESTION!If there were 6 bases?

If there were 6 bases in DNA instead of 4, and 30 amino acids instead of 20, how long would a codon need to be in order to specify an amino acid if the code were to remain unambiguous? Explain your answer....

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