Why do objects repel and attract?

Which statement about the atomic nucleus is correct? a. The nucleus is made of protons and neutrons and has a negative charge. b. The nucleus is made of protons and neutrons and has a positive charge. c.

A wire, of length L = 3.8 mm, on a circuit board carries a current of I = 2.54 μA in the j direction. A nearby circuit element generates a magnetic field in the vicinity of the wire of B = Bxi + Byj + Bzk, where Bx = 6.9 G, By = 2.6 G, and Bz = 1.

Peas can both cross-pollinate and self pollinate. why was this a key factor in Mandela work

1. Part A Which of the ball (s) described would have the most kinetic energy? A. 1. A basketball resting on a chair in the gym. B. 2. A baseball was hit by a bat and now flying through the air. c. 3. A bowling ball stationary on the floor. D. 4.

A jet plane is moving at a constant velocity on a flat surface. Which forces act against the forward motion of the plane? A. Gravity and engine thrust B. Engine thrust and friction C. Friction and air resistance D. Air resistance and gravity

How are selective breeding and genetic engineering different? They are not different. Selective breeding involves biotechnology. Genetic engineering involves biotechnology. Both B & C are correct.

When the sum of all forces acting on a block on an inclined plane is zero, the block?

a parallel plate capacitor has square plates that have edge length equal to 100cm and are separated by 1 mm. It is connected to a battery and is charged to 12V. How much energy is stored in the capacitor?

A net force of 10.0 n causes an object to accelerate at 2.00 m/s^2. what is the mass of the object? 0.200 kg 0.400 kg 5.00 kg 8.00 kg 20.0 kg

Which of these units is most appropriate to use when measuring the mass of a person?