Test
Sin título
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Preguntas del test (16)
1A force of 325N at 35 degree to the horizontal in Cartesian form
- A[266.22 , 186.41]
- B[186.41 , 266.22]
- C[-20.08 , 28.67]
- D[28.67 , -20.08]
2[3 , -2]is collinear with [6 , -4]
- AVerdadero
- BFalso
3A person pushes a lawnmower with a force of 325 N. The handle makes an angle of 55 degree with the ground. There is a force [blank_start][186.41 , 266.22][blank_end] in component form as a Cartesian vector.
- A[186.41 , 266.22]
4Determine the value of k so that u=[2 , 5] and v=[k , 4] are perpendicular
- Ak=10
- Bk=20
- Ck=-20
- Dk=-10
5The dot product is defined as a*b=|a||b|sin & , where & is the angle between a and b, 0 smaller than\equal & smaller than\equal 180 degree.
- AVerdadero
- BFalso
6Triangle ABC {A(3 , 1) , B(-2 , 3) , C(5 , 6)} is a right-angled triangle. Angle CBA is right-angle
- AVerdadero
- BFalso
7Determine the projection of u of v (u=5) (v=1)angle is 50 degree
- A3.21
- B5 sin50 degree
8Bill applies a force at 35 degree to the horizontal to move a football tackling dummy 5 m horizontally. He does 120 J of mechanical work. The magnitude of the force is [blank_start]29.3[blank_end]N
- A29.3
9A shoe store sold 400 pairs of Excalibur shoes and 300 pairs of Camelot shoes in a year. Excalibur shoes sell for $120 and Camelot shoes sell for $220. The dot product s*p is [blank_start]114000[blank_end].
- A114000
10Proj V on U = ( U * V / V * V ) V
- AVerdadero
- BFalso
11if u=[U1, U2, U3] and v=[V1, V2, V3], then u-v=[U1-V1, U2-V2, U3-V3]
- AVerdadero
- BFalso
12For two 3-D Cartesian vectors, u=[U1, U2, U3] and v=[V1, V2, V3] , [blank_start]u*v=U1V1+U2V2+U3V3[blank_end]
- Au*v=U1V1+U2V2+U3V3
13Determine all unit vectors collinear with[4, 1, -7]
- A1/root66 * [4, 1, -7]
- B1/root66
14Determine the angle between the vectors g=[6,1,2] and h=[-5,3,6]
- A106.3degree
- B6.3degree
15a times b=[a2b3-a3b2, a3b1-a1b3, a1b2-a2b1]
- AVerdadero
- BFalso
16Determine two vector that are orthogonal to both c=[4,6,-1] and d=[-2,10,11]
- A[76,-42,52]
- B[38,-21,26]
Información
- Descripción
- Test sobre Sin título, creado por Klaus Zhao el 10/05/2017.
- Autor
- Klaus Zhao
- Idioma
- English
- Visitas
- 0
- Valoración
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