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Luma
Questions (19)
A small rectangular ferry boat is 3.87 m wide and 5.81 m long. When a loaded truck pulls onto it, the boat sink an additional
1 answer
559 views
A 1.8 kg rectangular air mattress is 2.46 m long, 1.23 m wide, and 0.189 m thick.
What mass can it support in water before
2 answers
600 views
A piece of metal weighs 51.8 N in air, 37.2 N in water, and 42.6 N in an unknown liquid.
Find the density of the metal. Answer in
2 answers
657 views
A dense plastic toy of mass 1.8 kg is floating just beneath the surface of a pond. What is the buoyant force on it?
Answer in
2 answers
1,290 views
A rectangular barge 6 m long and 3 m wide float in fresh water. Water density is 1000 kg/m^3 horse?
Answer in units of m. If the
0 answers
713 views
A floating ball normally weighs 7 N. The acceleration of gravity is 9.8 m/s^2. What is the size of the buoyant force that acts
0 answers
618 views
A colony of troglodytes has been in a lengthy feud with its neighbors on the adjacent cliff. Colony A finally develops an
2 answers
3,853 views
A fireman, 43.7 m away from a burning building, directs a stream jet of water from a ground level fire hose at an angle of 31.3
1 answer
585 views
One of the fastest recorded pitches in major-league baseball, thrown by Nolan Ryan in 1974, was clocked at 96.8 mi/h.
The
1 answer
745 views
A spy in a speed boat is being chased down a river by government, officials in a faster craft. Just as the officials' boat pulls
2 answers
899 views
A pelican flying along a horizontal path drops a fish from a height of 3.3 m. The fish travels 8.2 m horizontally before it hits
1 answer
2,642 views
An autographed baseball rolls off of a 0.59 m high desk and strikes the floor 0.10 m away from the desk.
How fast was it rolling
0 answers
601 views
An artillery shell is fired at an angle of 26.8 degree above the horizontal ground with an initial speed of 1720 m/s.
The
1 answer
575 views
A ball of mass 0.4 kg, initially at rest, is kicked directly toward a fence from a point 20 m away, as shown below.
The velocity
2 answers
6,246 views
Tammy leaves the office, drives 21 Km due north, then turns onto a second highway and continues in a direction of 31 degree
2 answers
1,009 views
A girl delivering newspapers travels 3 blocks west, 3 blocks north, then 6 blocks east.
What is the magnitude of her resultant
1 answer
857 views
What is the magnitude of the vertical component of velocity of the plane?
Answer in units Km/h
0 answers
845 views
A truck travels beneath an airplane that is moving 140 Km/h at an angle of 15 degree to the ground.
How fast must the truck
1 answer
748 views
I am maybe overthinking this, but what is the lim as n-> infinity of |(n+1)/(n+2)|
? I am trying to use the ratio test to find
2 answers
668 views
Answers (4)
This is nuts... I think staff on this site should have a marker next to their name so that they can't be impersonated like that.
The troglodyte war continues, and a particularly offensive member of colony B is located 120 m below the top. At what speed must a bomb be rolled to get him? Answer in units of m/s.
How far above the top of fence will the ball pass? Consider the diameter of the ball to be negligible. Answer in units of m. What is the vertical component of the velocity when the ball reaches the plane of the fence? Answer in units of m/s.
At what angle is her displacement? consider east to be 0 degree and north 90 degree Answer in units of degree
