A bicycle tire pump has a piston with area 0.40 in2. If a person exerts a force of 26 lb on the piston while inflating a tire, what pressure does this produce on the air in the pump?
Two objects gravitationally attract with a force of 22N. If the distance between the objects is quadrupled (x4), then the new force of attraction is...?
Please explain how you found the answer and show work
How much energy is required to raise the temperature of 12.4 grams of gaseous nitrogen from 20.1 °C to 39.2 °C ?
A 43.0 kg parachutist is moving straight downward with a speed of 4.00 m/s .
If the parachutist comes to rest with constant acceleration over a distance of 0.785 , what force does the ground exert on her?
In a 74.0-g aqueous solution of methanol, CH4O, the mole fraction of methanol is 0.160. What is the mass of each component?Mass of CH4O (g) ? Mass of water (g) ?
While rearranging a dorm room, a student does 334 J of work in moving a desk 2.1 m. What was the magnitude of the applied horizontal force? N
What is the potential energy of a 3.15-kg object at the bottom of a well 11.8 m deep as measured from ground level? J Explain the sign of the answer.
Chemistry Help Please!
If .2784 moles of aluminum sulfide react with fluorine, to make aluminum fluoride and elemental sulfur (S), how many moles of fluorine are used up?
Calculate decelerate in m/s^2
Sam was driving with a speed of 45 miles per hour until a dog runs in front of him and suddenly he hits the brakes to decelerate his speed rapidly to 15 mph in 30s. Calculate his deceleration in... more
How do I solve for Work using only distance?
Currently taking highschool physics when I came across this question in my homework:"A basketball player is lifting weights. She benches 45 kg, moving it 0.5 meters. If she does this in 0.8... more
What is the percent yield of ZnCl2 when 18.0 g of Zn reacts with excess HCl and 29.3 g ZnCl2 is produced?
Zn + 2HCl = ZnCl2 + H2
For the reaction 3KOH+H3PO4⟶K3PO4+3H2O how many grams of potassium phosphate, K3PO4, are produced from 63.3 g of potassium hydroxide, KOH?
Answer looks like mass of potassium phosphate: g
Earth and Space science
Fill in the two processes that cause each of the following transitions. Ocean -> Cloud _______________________, _______________________Cloud -> Glacier _______________________,... more
Which of the following would be a restriction of the second amendment to the us constitution?
A. A ban on school smoking in public B. Schools as gun-free zonesC. Handicapped parking spaces D. Emergency evacuation routes
The order is for 25mg. The bottle says 100mg per 15ml of liquid. How many milliliters should you get?
The doctor finally figures out what is wrong with you and prescribes a medicine that will return you to full health. The order is for 25mg of the medicine. The nurse walks in with a liquid and you... more
Kinetics in Physics
An Olympic diver is on a diving platform 7.70 m above the water. To start her dive, she runs off of the platform with a speed of 1.19 m/s in the horizontal direction. What is the diver's speed, in... more
A 1.75 g sample of an unknown gas at 47 ∘C and 1.05 atm is stored in a 2.15 L flask.What is the density of the gas? (g/L)What is the molar mass of the gas? (g/mol)
How much methanol, in grams, must be burned to produce 767 kJ of heat?
When methanol, CH3OH, is burned in the presence of oxygen gas, O2, a large amount of heat energy is released. For this reason, it is often used as a fuel in high performance racing cars. The... more
If 81.5 mol of an ideal gas occupies 45.5 L at 45.00∘C, what is the pressure of the gas? The answer is in atm units.
Im so confused idk how to put it together
Boat rentals. boat rentals charge 350 for the first two hours and $50 for each additional half hour. if you budgeted at most $600 to rent the boat, how many additional half hours can you rent the... more
The volume of Neptune is on the order of 10^23 m^3 (a) What is this in cubic kilometers (km^3)? (b) What is it in cubic miles (mi^3)? (c) What is it in cubic centimeters (cm^3)?
Math Problem Help
Martina invested her savings in two investment funds. The amount she invested in Fund A was $4000 less than the amount she invested in Fund B. Fund A returned a 2% profit and Fund B returned a 8%... more