Questions asked by Fleur
 Back to user's profile

Romeo is at #x = 0 m# at #t = 0 s# when he sees Juliet at #x = 6 m#... ?

A sidewalk is to be constructed around a pool that measures #(10.0+0.1) m# by #(17.0+0.1) m#. If the sidewalk is to measure #(1.00+0.01) m# wide by #(9.0+0.1) cm# thick, what volume of concrete is needed and what is its approximate uncertainty?

A #"0.4596 g"# sample of a pure soluble chloride compound is dissolved in water, and all of the chloride ion is precipitated as #"AgCl"# by the addition of an excess of silver nitrate. The mass of the resulting #"AgCl"# is found to be #"0.6326 g"#...?

Ball #A# is dropped from rest from a building of height #H# exactly when ball #B# is thrown up vertically. When they collide #A# has double the speed of #B#. If the collision occurs at height #h# what is #h/H#?

Why does chromium form a #"Cr"^(2+)# ion?

The vector #vec A# is on a coordinate plane. The plane is then rotated counterclockwise by #phi#. How do I find the components of #vec A# in terms of the components of #vec A# once the plane is rotated?

Why is pressure always negative in the formula #w = P DeltaV#?

Eliminate the parameter to find a Cartesian equation for #x = sin^2 t# and #y=2cost#?

Differentiate #s=(1+sint)/(1+tant)# using the quotient rule?

Evaluate #sin^4 15^@ + cos^4 15^@#?

If #sin x + cos x = 1.2#, then #sin x  cos x# can be written in the form #+sqrtA#. What is #A#?

Determine the magnitude of a ball's radial acceleration?

A person standing at the top of a hemispherical rock of radius R kicks a ball (initially at rest on the top of the rock) to give it horizontal velocity #v_i#. What must be its minimum initial speed if the ball is never to hit the rock after it is kicked?

Three beakers each contain #"100 mL"# of acidic solution with a #"pH"# of #3.00#. The acids in the beakers are #"HCl"#, #"HNO"_2#, and #"HI"#. If #"50 mL"# of #"0.1 M NaOH"# is added to each beaker, which resulting solution will have the lowest #"pH"#?

Find the change in #"pH"# that occurs when #"0.010 mol NaOH"# is added to #"1.0 L"# of a buffered solution containing #"0.50 M"# acetic acid and #"0.50 M"# sodium acetate?

The gravitational force exerted on a baseball is #F_ghatj#. A pitcher throws the ball, initially at rest, with velocity #v hat i# by uniformly accelerating it along a horizontal line for a time interval of #t#. What force does he exert on the ball?

50.0 mL of 0.10 M acetic acid is titrated with 10.0 mL of 0.10 M NaOH. What's the pH of the solution?