Value of mass attached to a spring
A mass m at the end of a spring vibrates with a frequency of 0.92 Hz. When an additional 609 g mass is added to m, the frequency is 0.58 Hz. What is the value of m?
Expected delivery within 24 Hours
A 1050 hot-rolled steel of diameter 300mm has an ultimate tensile strength of S_ut=724MPa. Determine the un-modified endurance limit of the steel member from a rotating beam test.
Two charges attract each other with a force of 2.5 N. What will be the force if the distance between them is reduced to one-ninth of its original value?
Calculate the percentage volume change that would occur if a material were to be transformed from FCC to BCC. Assume that atomic diameters are fixed and the atoms pack together as rigid sphere.
To move a differential drive robot forward at 1 ft/sec, how fast must each wheel move? If the radius of each wheel is 1 foot, how many rotations per second must each wheel spin?
If the cylinder contains 4.6 lbm of refrigerant, find the final temperature (in oF) and the work done (in Btu). This is a closed system.
The combustion of methane gas (CH4) with air leads to the following volumetric analysis of the product gases on a dry basis: 9.52 % CO2, 0.28 % CO and 3.57 % O2. Determine The moles of air used per mole of fuel and the percent excess air used.
A 0.45 kg mass vibrates according to the equation x = 0.49 cos 8.45t, where x is in meters, and t is in seconds. (a) Determine the amplitude. (b) Determine the frequency. (c) Determine the total energy.
Ethane gas is burned in a steady-flow process with 30% excess air, both of which enter separately at 25 0 C and 1 atm. Assume the reaction goes to completion, and the products leave as a mixture at 1 atm and the environmental temperature of 25 0C.
1959284
Questions Asked
3,689
Active Tutors
1456331
Questions Answered
Start Excelling in your courses, Ask a tutor for help and get answers for your problems !!
Approaching a new social situation is similar to solving a cognitive problem. Children approaching a group of peers need to understand the others' communication
Children's goals in social interactions Children's goals affect their strategies in social situations, and this, too, is related to their peer status
The step-by-step social information processing approach may be a better model for encounters in new situations than in familiar situations
As in other areas of development, temperament interacts with experience to pre dict peer status.
A small number of children and adolescents who are perceived to be popular, however, display a mix of positive and negative behaviors
Question: Identify and distinguish between positive and negative reinforcement contingencies.