What is the friction force that acts on firefighter
A firefighter of mass 69 kg slides down a vertical pole with an acceleration of 3 m/s2. The acceleration of gravity is 10 m/s2 . What is the friction force that acts on him? Answer in units of N.
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A chemist dissolves 0.099 g of CuSO4 · 5 H2O in water and dilutes the solution to the mark in a 500-mL volumetric flask. A 36.1-mL sample of this solution is then transferred to a second 500-mL volumetric flask and diluted. What is the mola
The He is used to fill balloons to a volume of 2.50 L at 732 mm Hg and 27 degree C. How many balloons can be filled with He?
What is the pressure within a 1 mm diameter spherical droplet of water relative to the atmospheric pressure outside? Assume ‘sigma’ for pure water to be 0.073 N/m.
Device has the following specifications.Maximum VIL = 1.67 V Minimum VIH = 3.33 V Maximum VOL = 0.05 V Minimum VOH = 4.95 VAn input is measured to be 3.9 V. How will the device interpret that voltage?
An aqueous soultion of uknown salt of ruthenium is electrolyzed by a current of 2.50 amps passing for 50 min. if 2.618 g Ru is produced at the cathode, what is the charge on the ruthenium ions in solution?
A household refrigerator with a coefficient of performance of 2.4 removes energy from the refrigerated space at a rate of 600 Btu/h. Evaluating electricity at , determine the cost of electricity n a month when the refrigerator operates for 360 hours.
what is the end value of n in a hydrogen atom transition, if the electron starts in n=2 and the atom absorbs a photon of light with a frequency of 4.57*10^14 Hz?
A load with impedence z=[25-j50]ohms is to be connected to a loseless transmission line with characteristic impedance Zo.with Zo chosen such that the wave ratio is the smallest possible.what should Zo be?
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