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When the sodium salt of an organic acid is strongly heated, it yields sodium carbonate. If the weight ratio of the sodium salt to sodium carbonate obtained is 5 : 4, what is the equivalent weight of the acid ?
The mass of the Earth is 5.98 ? 1024 kg, and the mass of the Moon is 7.36 ? 1022 kg. Locate the center of mass of the Earth-Moon system as measured from the center of the Earth
Two electrons are fixed3.6cm apart. Another electron is shot from infinity and stops midway between the two. What is its initial speed
A 130-g baseball, moving along the x-axis with speed 29.0 m/s strikes a fence at a 45 degree angle and rebounds along the y-axis with unchanged speed. Give x and y components of its change in momentum.
A 2000 kg elevator initially is moving with speed 2 m/s as it passes the 5th °oor. How much work is done by nonconservative forces during the 10 second interval
You bike at 10.5 m/s directly away from your neighbor's trumpet sound and toward the sound of another neighbor's trombone, What frequency is the trombonist producing
A hollow cubical box is 0.30 m on an edge. What is the depth of the water in the box just at the instant that water from the lake begins to pour into the box from the lake
In molecular hydrogen, H2, two hydrogen atoms are bonded covalently by sharing two electrons. Determine the electric force acting on each proton
A sound wave is travelling trough a fresh water pool with a speed of 1482 m/s. what is the pressure amplitude of the wave
The two hot-air balloons in the drawing are 48.2m and 61.0 m above the ground, What is the horizontal distance x between the two balloons
A 69-g firecracker is at rest at the origin when it explodes into three pieces. Find the velocity of the third piece
question1an arrow is fired with a speed of 18.0 ms at a block of styrofoam resting on a smooth surface. the arrow
Like a charged rubber balloon with an even surface charge density, a charged soap bubble experiences an outward electrical force on every bit of its surface. Given the total charge Q on a bubble of radius R
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