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Questions (23)
An ecologist uses the line, based on 13 colonies, to predict how many birds will join another colony, to which 54% of the adults
2 answers
640 views
A basketball is thrown at 45° to the horizontal. The hoop is located 4.5m away horizontally at a height of 1m above the point
5 answers
923 views
A plane dives at 37° to the horizontal and releases a package at an altitude of 380m. If the load is in the air for 4s, find:
a)
2 answers
1,071 views
A ball is thrown horizontally at 15 m/s from a clifftop 70 m above the sea level. Find:
a) the time to land; s b) the angle at
1 answer
424 views
A ball is thrown horizontally at 15 m/s from a clifftop 70 m above the sea level. Find:
a) the time to land; s b) the angle at
1 answer
391 views
A ball is thrown horizontally at 15 m/s from a clifftop 70 m above the sea level. Find:
a) the time to land; b) the angle at
4 answers
491 views
A hot-air balloon has a total mass of 720 kg. It accelerates downwards (towards the ground) at 2.7m/s^2 even though an upwards
5 answers
2,545 views
A particle of mass 2.7kg has an initial velocity of 5i+5j m/s.
It is acted on by a force 2i-4.5j N for 2s. What is its final
5 answers
1,032 views
A 55 kg person stands on a scale in an elevator that accelerates downward at 3 m/s2.
a) What is the scale reading? N b) What is
3 answers
1,075 views
Solve the equation in the interval [0,2pi]. List all solutions
tan^2(x)+0.8 tan(x)-3.84 = 0
2 answers
660 views
A circular off ramp has a radius of 74 m and a posted speed limit of 50km/h. If the road is horizontal, what is the minimum
2 answers
575 views
Find the equation of the tangent line to the curve:
2(x^2+y^2)^2 = 25(x^2-y^2) at the point ( 3 , 1 ). The equation of this
1 answer
397 views
Find the equation of the tangent line to the curve:
2(x^2+y^2)^2 = 25(x^2-y^2) at the point ( 3 , 1 ). The equation of this
1 answer
354 views
(1 pt) An aricraft carrier has a mass of 8.9 x10^7kg and can cruise at 55 km/h.
a) What is the work required to stop it? J b)
7 answers
663 views
A ladder of mass M and length 2 m rests against a frictionless wall at an angle of 47 degrees to the horizontal. The coefficient
4 answers
756 views
A uniform meter stick of mass 40 g is used to suspend three objects as follows: 20 g at 0.13 m, 25 g at 0.41 m and 40 g at 0.64
5 answers
1,248 views
At t = 0 s a flywheel is rotating at 25 rpm. A motor gives it a constant acceleration of 0.8 rad/s2 until it reaches 100 rpm.
4 answers
1,138 views
A turntable with a moment of inertia of 0.014 kg*m2 rotates feely at 2.7 rad/s. A circular disk of mass 500 g and diameter 22
1 answer
1,081 views
A circular disk of mass 0.2 kg and radius 24 cm, initially not rotating, slips down a thin spindle onto a turntable (disk) of
1 answer
710 views
A child of mass 40 kg stands beside a circular platform of mass 90 kg and radius 1.6 m spinning at 2.8 rad/s. Treat the platform
2 answers
873 views
Four particles in the xy plane have the following masses and coordinates: 1 kg at (4 m, 4 m), 2 kg at (−3 m, 5 m), 3 kg at (5
4 answers
1,408 views
i need help finding area under curve of:2y=sqrt(3x),y=4, and 2y+1x=4
1 answer
478 views
i need help finding area under curve of:2y=sqrt(3x),y=4, and 2y+1x=4
1 answer
422 views
Answers (5)
yeah we get on here for answers not to do more work
whhere did u get this part from: 40*(x-50), the 40 is the mass of the ruler but what about the 50?
can u explain with steps, i don't understand. Thanks
doesnt say, but i already solved for time,3.78s
how do u solve v?
