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A spherical balloon is made from a material whose mass is 3.00 kg. The thickness of the material is negligible compared to the 1.4 m radius of the balloon. The balloon is filled with helium (He) at a temperature of 305 K and just floats in air, neither rising nor falling. The density of the surrounding air is 1.19 kg/m3. Find the absolute pressure of the helium gas.
Astronauts discover a planet orbiting another star. The mass of the star is 8.10 x 10^30 kg, what is the force exerted by the star on the planet
Two waves are traveling in the same direction along a stretched string. The waves are 45.0° out of phase. Find the amplitude of the resultant wave
During spin-dry cycle of a washing machine, the motor slows from 90 rad/s to 30 rad/s while the turning the drum through an angle of 180 radians. What is the magnitude of the angular acceleration of the motor.
Two identical, small insulating balls are suspended by separate 0.23-m threads that are attached to a common point on the ceiling. Determine the charge on each ball
In each of the four scenarios, a large bat lets out a short burst of ultrasonic sound, which the smaller bat hears a moment later. what return frequency will the large bat detect
A 38 g bullet is fired with a speed of 180 m/s into a 5 kg sandbag pendulum that is free to swing. To what maximum vertical height will the pendulum rise.
A half-Atwood machine consists of a block of mass 4.0 kg on a table, connected by a string that passes over a pulley to a hanging mass of 5.0 kg. how fast is it moving after the hanging block has fallen 2.0m
A 37-kg block of ice at 0° C is sliding on a horizontal surface. The initial speed of the ice is 6.2 m/s, Determine the mass of ice that melts into wate
A car is driving directly north on the freeway at a speed of 114 km/h and a truck is leaving the freeway driving 92 km/h in a direction that is 30° west of north
A pop bottle style instrument is played being open at one end closed at the other, if two successive frequencies, 350 Hz and 490 Hz, are produced, what is the fundamental frequency,
A Cepheid variable has been found to have a period of 22 days, from this its luminosity is determined to be 2.8 x 1029 W, calculate the distance to the Cepheid
Illustrate what are the distinguishing characteristics of the EMTN and explain why it is such a popular form of financing for MNEs?
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