Yes. The Cards section shows both a virtual card and a physical card, and you can use whichever suits the situation.
You can also add your virtual card to Apple Wallet or Google Wallet so you can tap to pay in person. You'll need to enter the card details manually.
Your physical card works a little differently. When it arrives in the mail, head to the Cards page and open the Manage menu to activate it. You'll set your PIN at the same time. After that, use the card number printed on the card itself — for security, we don't display it in your dashboard.