Calculate the efficiency of the motor
A 350V d.c. shunt motor has an armature resistance of 0.18 ohm. If the field current is 30A and the load current is 220A, calculate the efficiency of the motor. (neglect iron and mechanical losses):
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A student who carried out this reaction obtained 2.7 g of ferrocene. What was the percent yield for this reaction?
Which of the following substances (with specific heat capacity provided) would show the greatest temperature change upon absorbing 100.0 J of heat?
A strip of electrolytically pure copper weighing 3.178 gram is strongly heated in a stream of oxygen until it is all converted to a black oxide. The resultant black powder weighs 3.978 g. What is the formula of the oxide?
A dump truck is shown in the figure. The loaded container has a mass of 8000 Kg and may be modelled as a solid homogeneous block. The hydraulic cylinder applies a force of 300 kN to the container in the starting position shown.
Calculate the change in Gibbs energy (b) Is the reaction spontaneous? (c) Calculate the total change in entropy of the system and the surroundings.
A solution is prepared by adding 30.00 g of lactose (milk sugar) to 110.0 g of water at 55 °C. The partial pressure of water above the solution is __________ torr. The vapor pressure of pure water at 55 °C is 118 torr. The MW of lactose is
A 1.30 M solution of citric acid (H3C6H5O7) in water has a density of 1.10 g/cm3. Calculate the mass percent, molality, mole fraction, and normality of the citric acid. Citric acid has three acidic protons.
If the 150 lb man fires the o.2lb bullet with a horizontal muzzle velocity of 3000 ft/s, measured relative to the 600lb cart, determine the velocity of the cart just after firing. What is the velocity of the cart when the bullet becomes embed
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A spider takes advantage of the shape of tree limbs to build a web. The tree is neither negatively nor positively impacted.
A certain animal lives in the shallow ocean water, just off the coast. It spends its whole time drifting along in the current, where it can use
The transgenic camelina plants offer several advantages: camelina has a relatively short life cycle and good resilience to abiotic stress,
Question: The plasma membrane evagination and subsequent bulk movement of of substances out of the cell is called?
The knowledge gained from studying transgenic Strongyloides species can be pivotal in finding novel targets for anti-parasitic treatments.
There are many advantages to having a transgenic Strongyloides species. This is a great model organism because it is very easy to culture
Describe the five common steps of a signal-transduction cascade and explain how each contributes to the specificity and amplification of cellular responses