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Q1. If a steel old fashion clock is accurate at 20 Celsius (2 s per oscillation), what is the period of the clock in the summer (35 Celsius)? Q2. How long does it take to heat 200mL water from 0 Celsius to 50 Celsius? Water density is 1kg/L and the power of microwave is 600W. Suppose the efficiency of the microwave is100%. I need you to show the work for each step and write a short comment for for on each step expalaining what you did.
Three astronauts, propelled by jet backpacks, push and guide a 114 kg asteroid toward a processing dock, exerting the forces, with F1 = 32 N, F2 = 52 N, F3 = 39 N, θ1 = 30°, and θ3 = 60°. What is the (a) magnitude and (b) angle (measured relative ..
A voltmeter is connected in parallel to a resistor when measuringVi. Why is the measured voltage across a 10 MΩresistor not equal to the voltage measured across a power supply?
suppose that in a hypothetical oil-drop experiment you measure the following values for the charges on the drops
The electrical field within a continuous distribution of charge is given by the equation E= cxi+cyj+czk, Write the equation for E in terms of the position vector r
A down jacket has a surface area of 0.83 m2 and is filled with a 3.6 cm thick layer of down, which has a thermal conductivity of 6.0 10-6 kcal/(s · m · C°). At what rate is heat conducted through the coat
An airplane propeller spins at 1800 rpm (revolutions per minute). What is the propeller's angular velocity in rad/s
The drawing shows an edge-on view of two planar surfaces that intersect and are mutually perpendicular. Surface 1 has an area of2.0 m2, while surface 2 has an area of 3.9m2.
find the force necessary to start the crate moving given that the mass of the crate is 32 and the coefficient of static
a defect in a diamond appears to be 2.18 mm below the surface when viewed from directly above that surface. how far
A hole in an aluminum plate has a diameter of 1.179 at 24.00. What is the diameter of the hole at 199.0
The rotational speed of an auto mobile engine is increased at a constant rate from 1400 rev/min to 3100 rev/min in 16 s. Find its rotational acceleration in revolutions per minute-squared
A hawk flies in a horizontal arc of radius 14 m at a constant speed of 5 m/s. (a) Find out its centripetal acceleration. (b) It continues loftly along the same horizontal arc but increases its speed at the rate of 1 m/s2. Find out the acceleration..
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