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A force on a 5.0 kg body increases its speed uniformly from 2.0 m/s to 8.0 m/s in 3.0 seconds. What is the initial momentum of the body?
q1. if you place a 0.0001-c charge halfway between the terminals of a common 9-v battery 5 mm apart what force will
What is the heat value for a 15 gram sample of refuse-derived fuel that is combusted in a calorimeter having a heat capacity of 10,500 calories/° C
A student ties a 500 gram rock to a 1.0 meter long string and swings it around her head in a horizontal circle. Find at what angular velocity, in rpm, does the string tilt down at a 10 degree angle
Why were the relative intensities of an element's spectral lines NOT all the same? The next corresponding hydrogen line in the Balmer series shouldbe due to the n=7 to n=2 transition. Calculate the wavelength of this line and offer an explanation ..
In a double-slit experiment, the slits are separated by a distance equal to 100 times the wavelength of the light passing through the slits. The fringes are observed on a screen 50cm from the slit. What is the distance between the central maximum ..
A Camera flash circuit (being used for a coil gun) with a capacitance of .180 mF is charged to a voltage of 330 volts. Calculate the energy stored in it. What resistance should be put in series with the capacitance to limit the discharging current..
A certain satellite travels in an approximately circular orbit of radius 9.1 × 106 m with a period of 8 h 39 min. Calculate the mass of its planet from this information
In the figure below, k1= 5 N/m, k2 = 15 N/m and mass in = 2 Kg. Find the oscillation time period of the spring (in seconds)
A rock weighing 7538 N rock with a volumeof 47 L is completely submerged inmercury. The density of mercury is 13.6 kg/L. Determine the buoyant force on the rock
A screen is placed L = 23.6 cm from a diffraction grating that is illuminated by a laser with wavelength = 683 nm. what is the spacing of the grating
If the burgers are spaced 15cm apart, what is the rate of burger production (in burgers/min)?
In a friendly game of handball, you hit the ball essentially at ground level, How high is the ball when it hits the wall
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