What is the speed of sound
A closed organ pipe 0.8 m long has a diameter of 7.0 cm. The air in the church is 15oC. What is the speed of sound at 15oC?
Expected delivery within 24 Hours
A toy cannon uses a spring to project a 5.40 g soft rubber ball. The spring is originally compressed by 5.09 cm and has a force constant of 7.97 N/m. When the cannon is fired, the ball moves 15.3 cm through the horizontal barrel of the cannon, and
Of the roles that the press plays in the American political system, which is it least equipped to carry out properly?
Ethanol, is added to gasoline to produce E85, a fuel for automobiles engines. How many grams of O2 are required for complete combustion of 421g of ethanol ? When C2H5OH +3O2 produces 2CO2 + 3H2O.
Why was printing and publishing books and music so profitable in the Renaissance? How was information transmitted before printing was invented?
A Federation starship (1.0 106 kg) uses its tractor beam to pull a shuttlecraft (1.0 104 kg ) aboard from a distance of 8 km away. The tractor beam exerts a constant force of 4.0 104 N on the shuttlecraft. Both spacecraft are initially at rest. Ho
50.0 g of KCl at 27.0 °C is dissolved in 100. mL of 27.0 °C water in a coffee cup calorimeter. What is the final temperature of the salt solution? Assume that the heat capacity of the solution is 4.184 J/g·°C
A box of textbooks of mass 24.7 kg rests on a loading ramp that makes angle a with the horizontal. The coefficient of kinetic friction is .25 and the coefficient of static friction is .37. Find the minimum angle at which the box starts to slip.
Assuming the solution has a heat capacity of 4.18 J/°C·g and assuming no heat loss to the calorimeter, calculate the enthalpy change for the dissolution of NH4NO3 in units of kJ/mol.
1938819
Questions Asked
3,689
Active Tutors
1448895
Questions Answered
Start Excelling in your courses, Ask a tutor for help and get answers for your problems !!
What the Standard of Care is for the treatment of Suicidal Patients (see the background materials for guidance)
Part of adjusting to college is learning new ways to handle stressors, developing coping strategies, and seeking support from campus resources.
A Japanese inventor created a technique that can be used to discover the underlying cause of a problem or the underlying reason for a decision.
Toy Company Scenario - With a Twist (Minimum 6-8 sentences): You are hired by a toy company to design a new line of educational toys.
Next, choose and apply two of the major psychological theories from the list below to Robby's behaviors and mental processes.
Which research question is most suitable for a level 3 investigating psychology/children and youth studies student to base their research hypothesis around?
strategies compared to experts and are more influenced by immediate demands in the environment, which can make decision-making hard under pressure.