Physics, 24.04.2021 04:10 serianmollel
A swift blow with the hand can break a pine board. As the hand hits the board, the kinetic energy of the hand is transformed into elastic potential energy of the bending board; if the board bends far enough, it breaks. Applying a force to the center of a particular pine board deflects the center of the board by a distance that increases in proportion to the force. Ultimately the board breaks at an applied force of 870 N and a deflection of 1.3 cm .
Required:
To break the board with a blow from the hand, how fast must the hand be moving? Use 0.50kg for the mass of the hand.
Answers: 2
Physics, 22.06.2019 06:00
Which of the following changes will result in a stronger electromagnet? a. using fewer coils of wire b. using a higher voltage c. using a shorter nail d. using a longer wire
Answers: 1
Physics, 22.06.2019 16:30
Each neuron shown in this figure innervates a group of muscle fibers. what is the term for a group of muscle fibers innervated by a single neuron?
Answers: 1
Physics, 23.06.2019 01:00
What is the role of the water cycle in maintaining freshwater levels in lake and rivers?
Answers: 1
A swift blow with the hand can break a pine board. As the hand hits the board, the kinetic energy of...
Mathematics, 10.11.2020 14:00
English, 10.11.2020 14:00
Mathematics, 10.11.2020 14:00
Physics, 10.11.2020 14:00
Mathematics, 10.11.2020 14:00
English, 10.11.2020 14:00
Mathematics, 10.11.2020 14:00
English, 10.11.2020 14:00