Find the work done in moving an object along a vector r=3i+2j−5k if the applied force is f=2i-j-k

The work done can be taken as the  dot product of force and displacement .

Thus work = Force . Displacement

W = ( 2i - j - k ).( 3i + 2j - 5k ) = 6 - 2 + 5 = 9 J

Explanation:Pemerintah Kabupaten Kotawaringin Timur (Kotim) melalui Dinas Kebudayaan dan Pariwisata (Disbudpar) kembali menggelar kegiatan ritual adat Hindu Keharingan yakni Mapakanan Sahur dan Mamapas Lewu di Taman Miniatur Budaya, Jalan Karang Taruna, Kecamatan Mentawa Baru Ketapang, Sampit. 34-3-4

i think the answer is a and b

i wish you luck

the answer is the first electromagnet (a). this is because it has more coils around the ferromagnetic material. increasing the number of coils increases the surface area in which the metal interacts with the current in the coil. this enables more atoms in the metal to become aligned hence becoming more magnetized.