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Breauna
Questions (23)
A 1,280-kg car pulls a 350-kg trailer. The car exerts a horizontal force of 3,600-N against the ground in order to accelerate.
6 answers
5,541 views
Emmy kicks a soccer ball up at an angle of 45° over a level field. She watches the ball\'s trajectory and notices that it
1 answer
9,455 views
A speedboat moves on a lake with initial velocity vector v1,x = 8.57 m/s and v1,y = -2.61 m/s, then accelerates for 6.67 seconds
1 answer
6,131 views
The top of the pool table is 0.770 m from the floor. The placement of the tape is such that 0 m is aligned with the edge of the
1 answer
1,375 views
Bob has just finished climbing a sheer cliff above a beach, and wants to figure out how high he climbed. All he has to use,
0 answers
1,026 views
Jack and Jill exercise in a 25.0-m-long swimming pool. Jack swims nine lengths of the pool in 160.1 seconds (2 minutes and 40.1
1 answer
3,509 views
A small coin, initially at rest, begins falling. If the clock starts when the coin begins to fall, what is the magnitude of the
0 answers
614 views
While standing at the edge of the roof of a building, you throw a stone upward with an initial speed of 7.65 m/s. The stone
1 answer
676 views
A small bag of sand is released from an ascending hot-air balloon whose upward constant velocity is v0 = 1.45 m/s. Knowing that
1 answer
1,311 views
A 4.03-kg object is thrown vertically upward from the surface of Earth, where the acceleration due to gravity is g1 = 9.81 m/s2.
1 answer
1,674 views
A block of mass 8.1 kg is pulled to the right by an applied force of 76.2 N. If the acceleration is 0.84 m/s^2, how much
0 answers
376 views
A particle is moving with the given data. Find the position of the particle.
a(t) = t^2 − 8t + 5, s(0) = 0, s(1) = 20
1 answer
711 views
Gravel is being dumped from a conveyor belt at a rate of 25 ft3/min, and its coarseness is such that it forms a pile in the
4 answers
5,967 views
A water trough is 9 m long and has a cross-section in the shape of an isosceles trapezoid that is 40 cm wide at the bottom, 80
2 answers
4,581 views
The standard free energy of activation of a reaction A is 73.4 kJ mol–1 (17.5 kcal mol–1) at 298 K. Reaction B is one
1 answer
2,792 views
A reaction has a standard free-energy change of –12.40 kJ mol–1 (–2.964 kcal mol–1). Calculate the equilibrium constant
1 answer
625 views
Rank the given compounds based on their relative Brønsted acidities.
H-CH3 H-OH H-Cl H-F H-NH2
2 answers
3,028 views
Find each of the following functions.
f(x) = x2 − 3, g(x) = 5x + 2 (a) f compose g State the domain of the function. (Enter
1 answer
970 views
A rectangle has area 64 m2. Express the perimeter of the rectangle as a function of the length L of one of its sides.
State the
5 answers
10,039 views
Find all values of x in the interval [0, 2π] that satisfy the equation. (Enter your answers as a comma-separated list.)
3
3 answers
1,502 views
The gas phase decomposition of dinitrogen pentoxide at 335 K
N2O5(g) 2 NO2(g) + ½ O2(g) is first order in N2O5. During one
1 answer
2,951 views
For the gas phase decomposition of chloroethane,
CH3CH2Cl C2H4 + HCl the rate constant at 723 K is 1.75E-4 /s and the rate
1 answer
1,867 views
Write the standard equation for the parabola with the given characteristics.
vertex:(0,0) directrix:y= -1.
1 answer
773 views
